The Anatomy of Aging in Man and Animals |
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According accumulation adult advancing age age changes alterations Amer amount Anat Andrew animals appearance areas arteries atrophy become beginning blood body bone cent collagen common compared condition connective tissue considerable consists contain continued cortex cytoplasm decade decrease definite degeneration dermis described diameter elastic electron epithelium evidence female fibers findings fish formation frequently function Geront gland greater growth histological human important increase indicate individual kidney later layers less liver living loss lymphocytes lymphoid tissue male marked masses material mean membrane mice microscope mitochondria months mouse muscle nature nerve cells nodes normal nuclei occur old age older organs period persons pigment portion present probably rats REFERENCES relation relatively seems seen senescence senile significant similar skin species specimens spleen stain structure subjects substance thymus tion undergo various varying vessels wall weight young
