Gonadotropic Hormones of the Hypophysis of the Turkey
| Autor: | Gardner M. Riley, Allan J. Stanley, Emil Witschi |
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| Rok vydání: | 1937 |
| Předmět: | |
| Zdroj: | Experimental Biology and Medicine. 36:647-651 |
| ISSN: | 1535-3699 1535-3702 |
| DOI: | 10.3181/00379727-36-9345 |
| Popis: | Relatively little work has been done in the past on the hypophysis of birds. Benoit1 obtained evidence for the presence of gonadotropic hormones in hypophyses of sexually active ducks but not in those of inactive ones. Similarly Riddle and Schooley2 found no effects from implanted hypophyses of pigeons less than 1.8 months old, while those of mature pigeons gave definite indication of the presence of some gonad stimulating principle. Since birds develop no true corpora lutea and differ also otherwise in their physiology of reproduction markedly from mammals, it seemed desirable to make a more complete, qualitative and quantitative analysis of their gonadotropic hormones.Through the courtesy of Mr. A. C. Gingerich, we were permitted to collect about 6000 hypophyses at the packing plant of the Maplecrest Turkey Farms at Wellman, Iowa. The glands were taken from birds about 6 months old, the hens weighing around 10 and the gobblers around 18 pounds. The fresh glands weigh about 13 mg. and 25 mg. respectively... |
| Databáze: | OpenAIRE |
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