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Cytogenetics of South American Akodont Rodents (Cricetidae)
Akodon azarae (Rodentia Cricetidae) has a sex chromosome polymorphism which gives rise to XX females and females with a partial or total deletion of one X chromosome. Two hypotheses have beenExpand
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Effect of persistent infection with Junin virus on growth and reproduction of its natural reservoir, Calomys musculinus.
The effect of infection with Junin virus on growth and reproduction of its natural reservoir, Calomys musculinus, was studied. Eighty-five C. musculinus were inoculated intranasally at birth with 100Expand
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Morphology of female genital tracts in Dasypodidae (Xenarthra, Mammalia): a comparative survey
Previous works about comparative spermatology in Dasypodidae determined that sperm morphology is a striking variable among genera. It was suggested that this sperm feature may be related to specificExpand
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Metronidazole-induced alterations in murine spermatozoa morphology.
The aim of this work was to assess the effect of metronidazole (MTZ) on the stages of the seminiferous epithelial cycle and spermatozoa morphology when the drug is administered in human therapeuticExpand
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Evolutionary sperm morphology and morphometry in armadillos.
Little is known about the evolution of vertebrate spermatozoa. In most eutherian taxa a high degree of uniformity in sperm shapes and dimensions among species was observed. The aim of this work is toExpand
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Loss of Sertoli-Germ Cell Adhesion Determines the Rapid Germ Cell Elimination During the Seasonal Regression of the Seminiferous Epithelium of the Large Hairy Armadillo Chaetophractus villosus1
ABSTRACT The armadillo Chaetophractus villosus is a seasonal breeder whose seminiferous epithelium undergoes rapid regression with massive germ cell loss, leaving the tubules with only Sertoli cellsExpand
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Epidemiology of argentine hemorrhagic fever
Present knowledge points to horizontal transmission as the most significant mechanism for Junin virus maintenance in the main natural reservoirs, namely Calomys musculinus and Calomys laucha.TheExpand
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Spermatogenesis is seasonal in the large hairy armadillo, Chaetophractus villosus (Dasypodidae, Xenarthra, Mammalia).
Very little is known about the distinct reproductive biology of armadillos. Very few studies have investigated armadillo spermatogenesis, with data available only for Euphractus sexcinctus andExpand
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Comparative morphologic placental types in Dasypodidae (Chaetophractus villosus, Cabassous chacoensis, Tolypeutes matacus and Dasypus hybridus).
Information about the morphology of placentas in armadillos is scarce, except for D. novemcinctus. A comparative study of morphologic placental types in armadillos is important in order to have aExpand
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Meiotic behavior of the X1X2Y1Y2 quadrivalent of the primateAlouatta caraya
A multiple sex chromosome system was found in three unrelated individuals of the primateAlouatta caraya. This mechanism is originated by a translocation between the Y chromosome and one of theExpand
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