Word: thyroxin
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...neck with x-rays or the surgeon may cut out part of her goitre. Dosing with hormones is less brutal than surgery. Doctors begged pharmacologists to give them in pure form the active principles of the endocrine glands. When Chemist Edwin Calvin Kendall of the Mayo Clinic isolated thyroxin, the essence of the thyroid, about 15 years ago, a loud cry of applause arose. Since then other hormones have been refined and analyzed. Last week Professor Leopold Ruzicka of Zurich significantly reported in Nature that he had synthesized the male sex hormone. To get it, this altogether reputable scientist attacked...
...sulphur, considerable nitrogen, five different ameno-acids. They are working to identify remaining insulin crystal constituents. When that is done they feel that they can make synthetic insulin much cheaper than the present animal product. Insulin is one of the four hormones so far isolated. Of the others: adrenalin, thyroxin and pituitrin...
...hormones known to be secreted by the ductless glands thyroxin from the thyroid and epinephrin from the suprarenal have been reduced to purity...
...them. They are organic chemical compounds in the blood stream, in units of ultramicroscopic size. They actuate bodily organs much as nerves do, but more slowly, requiring to be transported bodily to the organs, like letters, whereas the nerves flash their stimuli like telegrams. The best known hormones: insulin, thyroxin, adrenalin, pituitrin...
...Metabolism. In autumn and winter, the thyroid glands of pigeons enlarged and the pigeons' eggs were predominantly male. In spring and summer, small thyroids, female pigeons. One female, after hatching many clutches, actually turned male, sired a brood. (The significance of this research was that the thyroid principle, thyroxin, appeared to be more fundamentally connected with sex determination than the sex-cell chromosomes-Dr. Oscar Riddle, Carnegie Institute...