Harry Beal Torrey , Matthew
نویسندگان
چکیده
I t is now 16 years since Nowikoff (1908) accelerated the division rate of Paramecium by adding thyroid gland to his cultures. Later , Shumway (1914) reached the same conclusion after a series of more critical and painstaking experiments, and in the following year Budington and Harvey (1915) showed tha t thyroids from various vertebrates would produce similar results. Still later, Shumway (1917) observed the effect of total thyroid on other processes of Paramecium, notably excretion and gastric vacuole formation. From these observations it appeared tha t thyroid was augmenting processes of dissimilation in so far as these might be indicated by effects on excretion and at the same time processes of assimilation as indicated by effects on the division rate. This striking combination of contrasting functions suggested the possibility that two distinct causes might be operating, both associated with the thyroid substance.
منابع مشابه
Torrey , Matthew
I t is now 16 years since Nowikoff (1908) accelerated the division rate of Paramecium by adding thyroid gland to his cultures. Later , Shumway (1914) reached the same conclusion after a series of more critical and painstaking experiments, and in the following year Budington and Harvey (1915) showed tha t thyroids from various vertebrates would produce similar results. Still later, Shumway (1917...
متن کاملThyroxin as a Depressant of the Division Rate of Paramecium
In concentrations of 1:10(4), 1:10(5), 1:10(6), in alkaline solution with a hydrogen ion concentration approximating that characteristic of normal human blood, thyroxin acts like total thyroid in accelerating certain metabolic processes in Paramecium, notably those connected with the phenomena of excretion. Unlike total thyroid, thyroxin depresses the division rate of Paramecium, the degree of ...
متن کاملHarry Beal Torrey (1873-1970) of California, USA, and his research on hydroids and other coelenterates.
Harry Beal Torrey was born on 22 May 1873 in Boston, Massachusetts. Two years later his family moved to Oakland, California. Torrey earned B.S. and M.S. degrees in zoology from the University of California, Berkeley, in 1895 and 1898 respectively, a Ph.D. in zoology from Columbia University in 1903, and an M.D. from the Medical College of Cornell University in 1927. He began his academic career...
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