Word: thyroxin
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Dates: during 1920-1929
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...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...
...gland, lessened secretion and abnormal growths. In the case of lessened secretion physicians treat the condition by giving small doses of iodin during youth or during periods such as pregnancy when the gland may be heavily drawn on; also by the giving of doses of thyroid extract or of thyroxin. Dr. Crile pointed out that iodin must be given with great caution to grown persons who may have a tendency to thyroid tumor...