By Bert M. Zuckerman
Nematodes as organic types, quantity 2: getting older and different version structures includes discussions on free-living nematodes as organic types for pharmacologic and toxicant checking out, and for reviews on gerontology and nutrients.
The e-book provides particular chapters that hide issues on nematodes as types to check getting older; nematodes as dietary versions; body structure and morphology of nematodes; and versions and mechanisms on toughness and survival in nematodes.
Geneticists, mobile and developmental biologists, neurologists, endocrinologists, toxicologists, nutritionists, and gerontologists will locate the ebook valuable.
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Additional info for Aging and Other Model Systems
0 mm in length). Checks made late in the process (sixth screening and later) of the size distribution of the cultures just before screening revealed a pattern consisting of only small and large worms with no intermediate sizes. This result showed that worms transferred to the medium from the previous screening were not contaminated 2. Effects of Aging on Enzymes 35 with young organisms, since these would show up as intermediate sizes in the 3-day interim before the next screening. The procedure does not permit one to pinpoint the exact ages of the screened organisms, since the initial screening isolates organisms with a range of ages.
3 Nematodes as Nutritional Models J. R. VANFLETEREN Laboratorium voor Morfologie en Systematiek der Dieren Rijksuniversiteit Gent Ledeganckstraat 35, B-9000 Gent, Belgium I. Introduction II. Nutritional Requirements in the Basal Medium A. Chemically Defined Basal Medium B. Nutritional Requirements in Defined Basal Medium III. The Growth Factor IV. Nutrient Absorption V. Possible Contaminants of Axenic Culture VI. Nutrition and Development VII. Conclusions and Prospects References 47 48 48 49 56 63 72 74 76 77 I.
Vitamins or amino acids) or examine the effects of hyponutrition. Addition of isotopes to the medium permits metabolic studies such as those on protein turnover discussed above. Moreover, the physical environment can be manipulated so that the effects of temperature or low oxygen tension on the life span or metabolism can be determined. Added to this is the fact that the organisms are easily handled, either in bulk culture or as individuals. A great advantage of using nematodes for aging studies is of course their relatively short life span.