The use of a protozoan for studies on aging. I. Differences between young and old organisms of Tokophyra infusionum as revealed by light and electron microscopy.
D000375:Aging / Q000502:physiology*; D000818:Animals; D056890:Eukaryota / Q000502:physiology*; D007448:Invertebrates; D008027:Light; D008854:Microscopy, Electron
AGING/physiology; PROTOZOA/physiology