Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.
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Question: Abstract: Yersinia enterocolitica was cultured from feces of 122 symptomatic adults in a single facility using selective culture media; all isolates were confirmed in an independent reference laboratory. Of 128 isolates, multiple serotypes were defined and all were biochemically typical for Yersinia enterocolitica. Other agents were seen in 20 patients; of these, seven were Yersinia fredriksenii and six were Clostridium difficile. Diarrhea (80%) and abdominal pain (64%) were common, whereas other features such as fever (9%) and bloody stools (8%) were unusual. Use of antibiotics (24%) or opiates (28%) in the month before culture was common. The terminal ileum was seen radiographically in 20 patients, but only two barium studies showed abnormalities. Fiberoptic endoscopy and biopsy studies, done in greater than 50% of the cases, showed minimal or no changes in most patients. However, 3 patients had pseudomembranous colitis with concomitant Clostridium difficile cytotoxin and 7 had diffuse severe colitis. New culture techniques, and possibly geographic differences, have contributed to the high isolation rates of this organism. Yersinia enterocolitica occurs sporadically, involves a variety of serotypes, and is associated with a broader clinical spectrum than was formerly appreciated.

Answer: Gastrointestinal features of culture-positive Yersinia enterocolitica infection.

Question: Abstract: The microbial flora of recurrently inflamed tonsils removed from 25 children with recurrent episodes of tonsillar pharyngitis were compared to flora of tonsils removed from 23 adults suffering from similar illness. More bacterial isolates per tonsil were recovered in adults (10.2 per tonsil) than in children (8.4 per tonsil). The difference between these groups was due to a higher recovery rate in adults of Bacteroides melaninogenicus group (1.6 isolates per adult, 0.8 per child) and Bacteroides fragilis group (0.4 per adult, 0.2 per child). Conversely, Group A beta-hemolytic streptococci were isolated in seven (28%) children as compared to their isolation in one (4%) adult. More isolates of beta-lactamase-producing organisms (BLPO) per tonsil were recovered in adults. Forty-three BLPO were detected in 21 (91%) of the 23 tonsils removed from adults (1.9 isolates per patient) as compared to 31 isolates in 16 (64%) of the 25 tonsils removed from children (1.2 isolates per patient) (P = 0.04). These findings suggest that the etiology of recurrent tonsillitis in adults may differ from that in children. The differences in the tonsillar flora may be due to the effect of many more courses of antimicrobials given over the years to adults and the changes in tonsillar tissue that occur in this age group.

Answer: Comparison of the microbiology of recurrent tonsillitis between children and adults.

Question: Abstract: The cumulus-fimbria interaction was investigated in vitro with endometriosis peritoneal fluid (PF). On the oviductal fimbria of the golden hamster, incubated with endometriosis and nonendometriosis PF and culture medium 199 contained 4% bovine serum albumin (control), was placed the mouse oocyte-cumulus complex at 5-minute intervals for 60 to 70 minutes. Incubation periods until the loss of fimbrial capability of ovum capture (ovum capturability disappearance time [OCDT] ) were 23.3 +/- 2.7 (standard error of the mean), 51.7 +/- 2.9, and 61.3 +/- 0.9 minutes with endometriosis, nonendometriosis PF, and control, respectively. OCDT was significantly decreased with cell-free and ultrafiltrated endometriosis PF containing a molecular size greater than 100,000 (26.0 +/- 2.8 and 26.1 +/- 2.5 minutes, respectively). A factor inhibiting fimbrial capability of ovum capture is present in endometriosis PF.

Answer:
A factor inhibiting ovum capture by the oviductal fimbriae present in endometriosis peritoneal fluid.