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Title:   Author  item
                                            FRENKEL, J - UNIVERSITY OF NEW MEXICOitem
                                            Dubey, Jitender
  Submitted to: Parasitology Research
                                    Publication Type: Review Article
                                    Publication Acceptance Date: 5/15/2000
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:
                                Technical Abstract: We enumerate identical and divergent findings concerning the obligate heteroxenous Hammondia hammondi and the facultatively homoxenous or heteroxenous Toxoplasma gondii.  Differences exist in life cycles, transmission and host range, especially transmissibility to birds and mammals other than rodents, in ultrastructural morphology, immunity and  serology in cats and to lesser degree in rodents, in DNA sequences and isoenzymes.  Because the recognition of obligate heteroxeny is essential to study these organisms and recognized them as taxa, it is advantageous to give heteroxeny a generic rather than a specific value.  Characterization of organisms with the life cycle patterns of Hammondia, Sarcocystis, Frenkelia and Toxoplasma is best achieved by means of the genera presently used.


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