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dc.contributor.authorWilliams, Tanya M.
dc.date.accessioned2006-12-12T14:40:23Z
dc.date.available2006-12-12T14:40:23Z
dc.date.issued1996-05
dc.identifier.other1996 .W675
dc.identifier.urihttp://hdl.handle.net/2092/470
dc.description[iii], 30 leaves. Advisor: James L. Christiansenen
dc.description.abstractCurrent literature suggests that reptiles do not undergo senescence. This study addresses age-related changes that occur in the kidneys of reptiles and compares them to senescent changes in mammalian kidneys. Kidney sections from a wild population of turtles ranging in age from 6 to 35 years were examined histologically by light and electron microscope. Kidney tubules of the older turtles showed a statistically significant greater deposition of a pigment believed to be lipofuscin or ceroid than did young turtles. Glomeruli in the oldest turtles had significantly fewer glomerular arterioles, and a significant increase in connective tissue in the glomerular tuft. Electron microscope studies indicated that glomeruli became smooth and simplified with advanced age. Foot processes lost their regular arrangement and became wider. Pedicels became irregular or degenerate. Fine structures of reptilian kidney appeared to be simpler and more organized than mammal kidney, but age-related changes were similar.en
dc.format.extent1657638 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherDrake Universityen
dc.relation.ispartofseriesDrake University Theses, College of Arts and Sciences;1996
dc.subjectTurtlesen
dc.subjectKidneysen
dc.subjectAgingen
dc.subjectOld ageen
dc.titleSenescent Changes in the Kidney of the Yellow Mud Turtle Kinosternon flavescensen
dc.typeThesisen


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