Environmental Factors influencing Gonadotrophin Assay in the Rat

Abstract

IT has hitherto been assumed that environmental factors play their part in establishing the final characteristics of a population predominantly as modifiers of development^1,2. This is clearly so when the end-products of cellular activity, as expressed in relatively stable anatomical structures, are under examination. When, however, attention is directed to the potentialities of an organ or tissue by measuring the rate of cellular activity, as in the response of tissues to the action of drugs, the environment can be expected to play a more immediate part.