Aging changes

More support for age changes comes from Fry (1987), in his observations of play in Zapotec children. He commented that the clear distinction between play and aggression apparent among 3 to 8 year old Zapotec children may blur somewhat for Zapotec 12-16 year olds. At times, horseplay among teenagers appeared on the basis of facial expression to become somewhat serious, but then shifted back to obvious play once again (p. 298). 

One point is central life endures. Despite major changes in the composition of the atmosphere of the Earth, repeated ice ages, changes in the salinity of ffie oceans, massive movements of the continents and ffie oceans, and extraterrestrial insults, life endures. Once life had emerged, it proved to be enormously resilient. More man 99% of all the species that ever existed no longer exist, yet we have more species on Farm... 

Using quantitative gel electrophoresis (37) and a simple activity stain (37), Blattler examined urease preparations showing evidences of aging changes (38, 38a). When urease, initially electrophoretically homogeneous, was allowed to age in buffer or 50% diol, enzymically active species appeared that had electrophoretic mobilities between the usual bands. These intermediate bands corresponded to a variety of species that differed by approximately 60,000 molecular weight between 240,000 and 480,000, and between 480,000 and 960,000. 

Figure 31 Age changes in horse-mackerel. (After Shulman and Urdenko, 1989.)...

Kurant, V.Z., Yakovenko, B.V. and Yavonenko, A.F. (1983). Age changes in the content of nucleic acids and proteins in carp tissues. Gydrobiologicheskii Zhumal 19, 75-78. 

Woodhead, A.D. (1974a). Ageing changes in the Siamese fighting fish, Betta splendens -1. The testis. Experimental Gerontology 9,75-81. 

W5. Warshaw, A. L., and Lee, K. H., Aging changes of pancreatic isoamylases and the appearance of old amylase in the serum of patients with pancreatic pseudocysts. Gastroenterology 79, 1246-1251 (1980). 

Ogawa A, Sakurai Y, Kayama T, Yoshimoto T (1989) Regional cerebral blood flow with age changes in rCBF in childhood. Neurol Res, 11 173-176. 

In normal elderly controls, non-specific periventricular and subcortical T2-hyperintense lesions of the brain are a common finding and are reported in 27%-92% of the elderly population (Breteler et al. 1994 de Leeuw et al. 2001). In asymptomatic individuals over 50 years of age, changes in the white matter on T2-weighted, proton density and FLAIR images are frequently found, varying from a few scattered lesions in the centrum semiovale or peri-... 

Age changes in dopamine levels in the corpus striatum of Albino Swiss (AS) and AS/AGU mutant rats. Neurosci Lett 259 54-56. 

Banfield, A.G., Age changes in the acetic acid-soluble collagen in human skin. Arch. Pathol. 68, 680-684, 1959 Steven, F.S. and Tristram, G.R., The denaturation of acetic acid-soluble calf-skin collagen. Changes in optical rotation, viscosity, and susceptibility towards enzymes during serial denaturation in solutions of urea, Biochem. J. 85,207-210,1962 Neumark, T. 

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