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Hormones and Behaviour in Higher Vertebrates (Paperback, Softcover reprint of the original 1st ed. 1983)
Loot Price: R2,871
Discovery Miles 28 710
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Hormones and Behaviour in Higher Vertebrates (Paperback, Softcover reprint of the original 1st ed. 1983)
Series: Proceedings in Life Sciences
Expected to ship within 10 - 15 working days
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Total price: R2,891
Discovery Miles: 28 910
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During the last decade, the study of behavioural endocrinology has
gone through a very exciting phase. New technologies have appeared
which have allowed us to answer new questions; the present book is
a reflection of this progress. In the eariy1970's, the advent of
steroid radioimmunoassays (RIA) for the first time permitted
measurement of gonadal and adrenal steroids in small aliquots of
plasma. It thus became possible to measure these hormones
repeatedly in the same animals (Le., to undertake longitudinal
studies) and also to assay them in small-sized animals such as the
rat or the ring dove which had traditionally been favourite
subjects for behavioural endocrinologists. With the RIA's, two
major goals have been achieved. On one hand, it has been possible
to ascertain that those hormones, whose action on behaviour had
been postulated on the basis of gonadectomy and hor- mone therapy
experiments, were actually present in adequate amounts in the
intact animals at the time they were supposed to exert their ac-
tion. On another hand, it has become feasible to measure the
circulat- ing levels of steroids induced by treatments with
exogenous hormones. This revealed that in a number of the early
experiments the hormonal conditions which had been tested were
completely outside the physi- ological range (plasma levels of
steroids being several order of magni- tude above physiological
levels after the injections) and a reinterpre- tation of the
results was thus needed.
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