bluuebunny/crossref_metadata_2025_split huggingface dataset:
Die postnatale Entwicklung des Extremitätenskeletts bei Schaf und Ziege
Authors: Rajtová Viera 
Published: June 2007

ZusammenfassungPostnatale Entwicklung dcs Extremitätenskeletts bei Sdiaf und ZiegeBei der Ziege wadisen die langen Knochen gleichmäßiger und schließen sich die Epiphysenspalten früher als beim Sdiaf. Bei ihr ist audi der Geschlechtsdimorphismus ausgeprägter. Allgemein haben die Männchen längere und breitere Knochen, und einige Epiphysen können bei ihnen später als bei den Weibchen schließen. Zweimal fand sich bei der Ziege ein unpaares Os sesamoideum in der Ursprungssehne des lateralen M. gastrocnemius. Trächtige Tiere wiesen keine makroskopischen Veränderungen der Symphysis pelvis auf.SummaryPostnatal development of the bones of the limbs in sheep and goatThe long bones of the goat grow more evenly, and the epiphyseal cartilages disappear sooner, than in the sheep. Sexual dimorphism is also more marked in the goat. The males generally have longer and wider bones and some epiphyseal cartilages may close later in the males than in the females. In the goat, a unilateral sesamoid bone was found twice in the origin of the lateral head of the gastrocnemius. Pregnant animals did not show any gross changes in the pelvic symphysis.RésuméDéveloppement postnatal du squelette des extrémités chez le Mouton et la ChèvreChez la Chèvre, la croissance des os longs est plus régulière et les épiphyses se soudent plus tôt que chez le Mouton; le dimorphisme sexuel est aussi, chez elle, plus accuse. En général, les mâles ont des os plus longs et plus larges et quelques épiphyses peuvent, chez eux, se souder plus tard que chez les femelles. Par deux fois, on a trouvé, chez la Chèvre, un Os sesamoideum impair dans le tendon d'origine du M. gastrocnemius latéral. Les sujets gestants n'ont présenté aucune modification macroscopique de la Symphysis pelvis.ResumenDesarrollo postnatal del esqueleto de los miembros en oveja y cabraEn la cabra, los huesos largos crecen de una manera más uniforme que en la oveja y los cartílagos de conjunción desaparecen más temprano, siendo tambíen el dimorfismo sexual más destacado. En general, los machos tienen huesos más largos y anchos y algunas epífisis se unen a la diáfisis más tarde que en las hembras. Dos veces se encontró en la cabra un hueso sesamoideo impar el el tendón de origen del M. gastrocnemio lateral. Animales preñados no mostraron cambios macroscópicos en la sinfisis pelviana.
Relation between Fine Structure and Function of the Corpus luteum of Wild Ruminants
Authors: Kayanja F. I. B. , Gombe S. 
Published: June 2007

SummaryCorpora lutea from 8 species of wild ruminants relatively abundant in East Africa were investigated. A comparison of the ultrastructure of luteal cells of the different species is recorded and discussed. The progesterone content was estimated in the corpora lutea of two species and related to the fine structure. A cell‐type having mitochondria as the predominant cytoplasmic organelle is described.ZusammenfassungDie Beziehung zwischen Ultrastruktur und Funktion beim Corpus luteum von WildwiederkäuernEs wurden die Corpora lutea von 8 in Ostafrika relativ häufig vorkom‐menden Wildwiederkäuern untersucht. Die Ultrastruktur der Geldkörper‐zellen der verschiedenen Species wurde verglichen und diskutiert. Der Pro‐gesterongehalt wurde in den Corpora lutea zweier Species bestimmt und mit der Feinstruktur in Beziehung gebracht. Es wurde ein Zelltyp beschrieben, bei dem die Mitochondrien die vorherrschenden Zellorganellen darstellen.RésuméLa relation entre ultrastructure et fonction du Corpus luteum des ruminants sauvagesDes recherches sur les Corpora lutea de 8 species des ruminants sauvages qu'on trouve relativement souvant en Afrique de l'ouest ont été faites. On a comparé et discuté l'ultrastructure des cellules luteales de doux species differerants. La contenance du progesterone a été mesuré dans les corpora lutea de deux species, et on a fait une relation entre les corpora lutea st l'ultrastructure. On a décrit un type celluleux où les mitochondria prédominent.ResumenRelaciones entre la estructura fina y la función del cuerpo luteo de rumiantes salvajesSe estudiaron los cuerpos lúteos de 8 rumiantes salvajes que abundan en el Este del Africa. Se discute la ultra‐estructura de las células luteicas de las diferentes especies. En dos de las especies, se determinó el contenido en pro‐gesterona de los cuerpos lúteos, estableciéndose su relación con la ultra‐estructura. Se describe un tipo de célula, en el cual predominan las mito‐condrias.
Gonadal Ultrastructure and Steroids in Foetal Zebra
Authors: Kayanja F. I. B. , Gombe S. , Rumney G. 
Published: June 2007

SummaryThe presence of progestins and androgens in the foetal gonad of the zebra and the absence of these hormons in the foetal horse reflect perhaps a significant species difference.ZusammenfassungFeinstruktur der Gonaden und Steroidhormone beim fetalen ZebraDie fetalen Gonaden des Zebras enthalten Progestine und Androgene. Das ist beim Pferd nicht so. Der Unterschied beruht moglicherweise auf einem Artunterschied.
Fine Structure and Peroxidase Activity of the Bovine Mandibular Gland Cells
Authors: Bloom Gunnar D. , Carlsöö Bengt 
Published: June 2007

SummaryThe acini of the bovine mandibular gland consist of mucous and demilunar seromucous cells. The mucous cells contain electron‐lucid mucigen droplets or mucoid masses, only rarely delimited by membranes. The cisternae of the RER communicate freely. Mitochondria are scarce. The seromucous demilunar cells contain considerably more granules, and perigranular membranes are far more common. Many granules have characteristic alternating electron opaque and less electron dense areas. The prominent RER appears to be associated with a peculiar labyrinth of interconnecting tubules. Mitochondria are numerous. Numerous myoepithelial cells are observed. The cuboidal cells of the intercalated ducts lack signs of secretory activity. The columnar cells of the striated ducts have extensive infoldings of the basal plasma membrane, associated with mitochondria. The cell apex contains many granulated vesicles.Endogenous lactoperoxidase activity could be demonstrated only in the demilunar cells, within the secretory granules, the RER, including the perinuclear cisternae, as well as the labyrinth mentioned above. A positive reaction could be observed over acinar lumina and in intercellular canaliculi. The possible role of peroxidase as a component of a bactericidal system of the bovine saliva is discussed.
Le développement de l' activité des estérases carboxyliques et de la phosphatase alcaline dans l' oesophage, le réseau, le rumen et le f euillet du boeuf1
Authors: Lauwers H. , Sebruyns M. , Vos N. de 
Published: June 2007

RésuméLes réAservoirs gastriques et l' oesophage de 8 boeufs adultes, de 6 veaux gras, d' un veau de 4 jours et de 4 foetus furent examinés quant à leur activité en estérases et phosphatase alcaline.Dans les réservoirs gastriques la localisation et l' intensityé des ces enzymes dépendent de l' âge de l' animal. Chez les foetus et le veau de quatre jours les estérases sont limitées aux couches profondes de l' épithélium. Chez les veaux gras et les boeufs adultes le stratum corneum et le stratum transitionale sont devenus trés positifs. La phosphatase alcaline est absente dans l' épithélium des foetus. Une ligne d' activité se developpe au niveau du stratum transitionale chez le veau de quatre jours et chez les boeufs adultes les cellules supérieures du stratum spinosum et toutes les cellules du stratum transitionale et corneum sont positives.Dans l' oesophage la présence de ces enzymes ne change presque pas avec l'âge. Les estérases restent limitées aux couches épithéliales profondes et la phosphatase alcaline n'apparait pas dans l'épithélium.La localisation et l'activité de ces enzymes est mise en relation avec le processus de kératinisation et surtout avec la résorption dans les réservoirs gastriques du boeuf adulte.
Biology of the Rice Rat (Oryzomys palustris natator) in a Laboratory Environment
Authors: Park A. Wallace , Nowosielski‐Slepowron B. J. A. 
Published: June 2007

SummaryThe pattern of body growth ranging from weaning to old age has been examined by means of parameters of weight and head‐body length from 370 rice rats. The differences between the sexes were found to emerge after 20 days until clear demarkation existed in both weight and length by 30 days. Weight was found to have a greater rate of increase relative to length. The males were found to continue to increase weight until 20 months old while length had ceased by 16 months. The females were found to increase weight and length until 14 and 12 months respectively. Since the onset of maturity, both sexual and in body, begins earlier in the female than the male, the cessation of such processes would occur earlier and later respectively. These growth periods occupy the earlier months and are regarded as representatives of growth in length whereas the later increases cannot be placed in the same category.
Etude cytologique de ľhypophyse de la barbotte brune (Pisces, Ictalurus nebulosus, Le Sueur, 1819)
Authors: LE Dlscorde D. 
Published: June 2007

RésuméĽhypophyse &dcar;Ictalurus nebulosus présente 3 lobes qui s'emboitent con‐centriquement les uns dans les autres. Les 2 lobes, périphérique et moyen, con‐tiennent les 7 cellules hypophysiotropes toutes individualisées par leurs affinityés tinctoriales histologiques. Elle est pédiculisée sur ľhypothalamus par ľin‐termédiaire du lobe nerveux, qui invagine dans le lobe moyen et infiltre des faisceaux nerveux dans ce dernier.ZusammenfassungZur Zytologie der Hypophyse der Aalraupe (Pisces, Ictalurus nebulosus, Le Sueur 1819)Die Hyophyse von Ictalurus nebulosus besteht aus 3 Lappen, die ein‐ander konzentrisch umgeben. Der periphere und mittlere Lappen enthält 7 hypophysiotrope Zellarten, die an ihrer histologischen Färbbarkeit erkennbar sind. Der dritte, nervöse Lappen sitzt mit seinem Mittelteil gestielt auf dem Hypothalamus und buchtet sich gegen den mittleren Lappen vor, letzteren mit Nervenbündeln infiltrierend.SummaryOn the cytology of the hypophysis of Ictalurus nebulosus (Le Sueur 1819)The hypophysis of Ictalurus nebulosus consists of three lobes which surround each other concentrically. The peripheral and the middle lobes contain seven hypophysiotropic cell types, which can be differentiated by histological stains. The third, neurohypophyseal lobe is attached, with its stalklike central part, to the hypothalamus and bulges into the middle lobe, infiltrating the latter with nerve bundles.ResumenLa citología de la hipófisis de ïctalurus nebulosus (Le Sueur, 1819)La hipófisis de Ictalurus nebulosus se compone de tres 1óbulos concén‐tricos. Los 1óbulos perférico y mediano contienen 7 tipos de células hipofisio‐tropas que se distinguen por su coloración histológica. El tercer 1óbulo, el nervioso, se fija con su tallo mediano en el hipotálamo, evaginándose hacia el 1óbulo medio, al cual infiltra con haces nerviosos.
On the Fine Structure and Mucosubstances in the Bulbourethral Gland in the Domestic Boar
Authors: Nielsen Ellen Holm , Sørensen Vibeke Wang , Björkman Nils 
Published: June 2007

AbstractThe purpose was to study the fine structure of the cells and the histochemistry of the mucosubstances of the porcine bulbourethral gland. The material comprised adult boars from the Danish Landrace, two for electron microscopy and 10 for ordinary histology and histochemistry. The methods included histology, electron microscopy and histochemical tests on mucosubstances. The fine structure of the cells and the histochemistry of the mucosubstances of the secretory granules were described. The functional aspects of the findings were discussed.
Intercellular Junctions in the Developing Mammalian Thymus*
Authors: Harrison Bettina H. 
Published: June 2007

AbstractLymphopoiesis in fetal thymuses of mice and rabbits was studied to try to correlate heterogeneity of lymphocytes with heterogeneity of embryonic origin. The thymuses of fetal mice of 11 to 14 days gestation and of fetal rabbits of 18 and 19 days gestation were examined by electron microscopy. At the time of earliest appearance of lymphoid cells in both species desmosomes were seen on both epithelial and lymphoid cells. These desmosomes persisted for several days, then disappeared from completely differentiated lymphocytes in both species. The similarity between epithelial and lymphoid cells in their earliest developmental stages suggests a common precursor cell for both.
A New Epidermal Membrane Associated with the Foetus of the Camel (Camelus dromedarius)
Authors: Musa B. E. 
Published: June 2007

SummaryA unique membrane attached to the foetus of the camel is described for the first time. It is produced by the deep layers of the epidermis of the skin. The presence of this membrane was first histologically evident at CRL of 24 cm. and it was macroscopically visible when the CRL was 41 cm. and until the end of gestation. The membrane starts as unkeratinized superficial layers of squamous epithelial cells which later undergo keratinization and separation from the deep layers of the epidermis except at the lips, nares, vulva, prepuce, anus, umbilicus, teat orifices, and hoofs. Because of this arrangement all the foetal orifices open outside the membrane into the amniotic fluid and the rest of the body is enclosed in this membrane. Hence the foetus of the camel is never in contact with the amniotic fluid during the greater portion of the gestation period.ZusammenfassungEine neue Epidermalmembran beim Fetus des Kamels (Camelus dromedarius)Eine einzigartige Membran des Kamelfetus wird erstmals beschrieben. Sie wird von den tiefen Schichten der Hautepidermis gebildet. Histologisch ab 24 cm SSL darstellbar, ist sie makroskopisch ab 41 cm SSL bis zur Geburt sicht‐bar. Die Membran besteht aus den unverhornten oberflächlichen geschichteten Plattenepithelien, die später verhornen und sich von den tiefen Schichten abhe‐ben. Diese Trennung unterbleibt nur an Lippen, Nasenlöchern, Vulva, Vorhaut, Anus, Nabel, Zitzenöffnungen und Hufen, so daß die fetalen Leibesöff‐nungen sich außerhalb der Membran in die Amnionsflüssigkeit öffnen. Der übrige Körper ist von dieser Membran umschlossen und dadurch für den gröβten Teil der Trächtigkeit ohne Kontakt mit der Amnionsflüssigkeit.
A Quantitative Study of Muscle Development in the Bovine Foetus (Bos indicus)
Authors: Stickland N. C. 
Published: June 2007

AbstractThe investigation was carried out in order to quantify the changes in various cell parameters which take place in the normal prenatal development bovine muscle. Sections of muscles, taken from 36 Zebu foetuses (Bos indicns) of about 75 to 245 days gestation, were examined microscopically. Results are given on the numbers and sizes of myotubes and myofibres seen section at various stages of development. The relative contribution of increases in cell size and cell number to overall muscle size increase are discussed.
Ultrastructural and Functional Correlates of Increased Luteinizing Hormone Synthesis and Secretion in Castrated Male Mice*
Authors: Chang Nada , Benson Bryant , Richardson Debbie 
Published: June 2007

AbstractThe changes in the ultrastructure of gonadotrops and in the plasma levels of LH were studied three, five, seven, ten, twenty and forty days after castration in adult male mice. Gonadotrops in sham operated animals contained numerous granules and moderately developed synthetic organelles. Castration induced mobilization of the secretory granules at three days, and degranulation of gonadotrops and a hypertrophy of the synthetic organelles at seven days. By ten days after castration gonadotrops were greatly enlarged, while in addition at forty days they frequently contained large cytoplasmic vesicles filled with lipid‐like material. These changes were paralleled by an initial three fold increase in serum LH three days after castration, and a further ten fold increase in the levels of the hormone forty days after castration. In conclusion, the castration‐induced morphologic changes in gonadotrops correlate well with increased release of LH. The subtle differences in the control of timing of LH secretion in mice and rats are discussed. A trans‐cytoplasmic route for rapid transport of gonadotropic hormones in the mouse is postulated, and the significance of cytoplasmic vesicles in the castrate discussed.
A Comparative Ultrastructural Study on Typical and Modified Sertoli Cells before and after Ligation of the Efferent Ductules in the Rabbit
Authors: Osman D. I. 
Published: June 2007

AbstractThe aim of this study was to see the effect of ligation of the efferent ductules on the fine structure of typical and modified Sertoli cells in the rabbit. Testes from six control animals and from five operated animals were used in this study. It was found that ligation of the efferent ductules for 48 hours has no immediate effect on the structure of these cells and the cell‐to‐cell contacts remained unaffected.
Ultrastructural Studies of Chicken Embryo Chorioallantoic Membrane during Incubation
Authors: Fáncsi T. , Fehér Gy. 
Published: June 2007

SummaryStructural changes taking place in the chorioallantoic membrane (CAM) of embryonated hen's eggs during incubation were followed up by histological, histochemical and electron microscopic methods. The allantoic sac surrounds the amnionic sac and also the yolk sac by the 7th to 11th day, respectively, and forms together with the chorion the CAM. The mesenchymal layer placing between the chorion of ectodermal and the allantoic layer of entodermal origin develops from the somatic and splanchnic‐pleure of the parietal mesoderm.The CAM is composed of three different layers, i.e. chorionic epithelium, mesenchyme and allantoic epithelium. The chorion comprises 2 layers of cubical epithelial cells. In between the 2 layers capillaries and directly under the shell membrane vascular sinuses can be found. Blood circulating in the sinuses is separated from the air in the pores of the shell membrane by the adacent epithelial cell‐projections of 0,2 μm thickness, the basal membrane (0.1 μm) and the sinus endothelial layer of 0.2 μm thickness. The mesenchymal cells are of star‐like form. The allantioc epithelium is built of one layer of fusiform cells with oval‐shaped or rod‐like nuclei.
Sur la morphologie de la fosse ovale du coeur chez le chien adulte (Canis familiaris)
Authors: Dias S. Mello , Orsi A. M. , Silva M. C. Oliveira et Z. 
Published: June 2007

SummaryOn the Morphology of the Fossa ovalis in the adult Dog Heart1. The Fossae ovales of 77 adult dog hearts are not a partly persistent foramen ovale.2. They are always translucent.3. According to their shape there are 6 different types: pyriform (most frequently), triangulare, elliptical, ovale, reniform and round (most rarely).4. The middle dimensions are 0.6227 cm. laterolateral and 0.3525 cm. craniocaudal.5. The middle depth is 0.15 cm.
Fine Structure of Principal Cells in the Initial Segment of the Epididymal Duct in the Ram
Authors: Nicander Lennart 
Published: June 2007

AbstractThe aim of the study was to investigate cytological characteristics of principal cells in the proximal caput epididymidis of the ram. Young, sexually mature rams were used. The epididymis was fixed by local vascular perfusion with glutaraldehyde. Samples for histology were embedded in paraffin wax. Small samples for electron microscopy were immersed in osmium tetroxide and embedded in Epon. Signs of pinocytosis and vesicular merocrine secretion were seen, as well as numerous small basal lysosomes. The distal end of the segment showed lower cells with little evidence of secretion.
The Growth of the Transverse Sectional Area (TSA) of M. Semitendinosus in the Dog and Horse and its Relation to Athletic Ability in the Two Species
Authors: Gunn H. Michael 
Published: June 2007

SummaryThe transverse sectional area (TSA) of m. semitendinosus grows at a greater rate than the 2/3 power of liveweight in both Greyhounds and Thoroughbreds (athletic animals) while it increases at a rate proportional to liveweight in other breeds of dogs and horses (non‐athletes). Although the TSA of the muscle in the adult athletes of both species is greater than that of the less fortunate fellow specific members there is no significant difference in the TSA of the muscle between the perinates of the two types of animals within each species. Thoroughbred cross horses have TSA values similar to those of Thoroughbreds.
Les rameaux musculaires distaux du nerf tibial chez le Boeuf (Bos taurus L.)
Authors: Pavaux Cl. , Chahrasbi H. , Sautet J. Y. , Lignereux Y. 
Published: June 2007

AbstractThe distribution of the tibial nerve in the popliteal region has been determined on 30 dissections. With reference to the neurectomies as treatment for spastic paresis, the authors claim that it is possible to resect selectively the motor branches to the superficial digital flexor. They believe this would correct the condition, and at the same time reduce the effects of a more radical resection.
The Tail Veins of the Philippine Carabao (Bubalus bubalis) and a Safer Method for Venipuncture
Authors: Maala Ceferino P. 
Published: June 2007

AbstractThe purpose of the present study is to describe the tail veins of the Philippine carabao and to suggest a safer method for venipuncture in this animal. The investigations have been carried out in eleven Latex injected tails of 7–10 year‐old carabaos of both sexes. The carabao tail is drained by the lateral and median caudal veins. The lateral caudal vein is almost as large as the median caudal vein and is not a satellite to an artery. A new venipuncture technique using the lateral caudal vein is described.
Mikromorphologische Untersuchungen am Rete mirabile epidurale rostrale und am Sinus cavernosus des Schafes (Ovis aries)
Authors: Godynicki Von S. , Schwarz R. , Radke B. 
Published: June 2007

AbstractThe thin walled vessels of the Rete mirabile epidurale rostrale are invaginated into the Sinus cavernosus. Because of that most of Rete vessels are not surrounded by connective or supporting tissues of organs, but only by blood. The fluid surroundings influence the structure of the vessel wall. As a result of its specific construction and its special location the arterial Rete mirabile epidurale rostrale is functionally associated with the venous Sinus cavernosus.
Age Related Changes in the Histomorphology of the Adenohypophysis of the Goat
Authors: Khatra G. S. , Nanda B. S. 
Published: June 2007

AbstractA histologic and histochemical study of the hypophyses of 44 goats was carried out. The ontogenesis of the hypophysis is described utilizing animals aged from birth to one month, one month to six months, six months to one year, one year to three years and three years and above. Correlations are made between age, histologic structure and histochemical maturation of the hypophysis.
Die Arterien der Articulatio coxae und des proximalen Femurabschnittes bei der Katze (Felis catus)*
Authors: Pohlmeyer Von K. 
Published: June 2007

AbstractThe arterial blood supply of the hip joint and the proximal end of the femur was studied grossly and microscopically in 40 cats. The aim of the study was to provide clinicians with an overview of the arterial supply to the area. The findings were discussed and compared with those in dogs reported in the literature.
Zur Lupenanatomie der klassischen Leberläppchen des Schweines
Authors: Wünsche Von Anita 
Published: June 2007

AbstractThe natural division of the pig's liver into lobules was established at this stage without particular attention to the pattern of blood vessels—in order to explain missing relationships in the structure of the liver parenchyma. The results of the study, which diviate from what has been reported to date, enable us to give a first overview and make comparisons with histological sections.