Treatment of chick embryos early in development with the teratogen, trypan blue, results in a high incidence of rumplessness at later developmental stages. Experiments were conducted to discover the causative events between dye administration and rumplessness. Initially, 167 two-day embryos were tre
Insulin-induced hypoglycemia and rumplessness in chick embryos
โ Scribed by Zwilling, Edgar
- Publisher
- John Wiley and Sons
- Year
- 1951
- Tongue
- English
- Weight
- 471 KB
- Volume
- 117
- Category
- Article
- ISSN
- 0022-104X
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Storm Agricultural Experiment Station, Storm, Connecticut ## THREE FIGURES Insulin, injected into the yolk sac of %day chick embryos, causes the appearance of c? number of malformations (Landauer, '47a). The incidence of abnormalities is dependent on dose. With two units of insulin injected at th
cross-over " against the original crystalline insulin and calculating the potency by relative drop (Hershey and Lacey, '36). A value of 26.5 units per milligram was found. The nitrogen content was 15.66%, giving an insulin nitrogen ratio of 1 unit C 0.00591 mg of nitrogen. A test for zinc by dithizo
Incidental to other investigations it was observed that the injection of solutions of certain chemicals into unincubated chicken eggs led to the appearance of increased numbers of rumpless embryos and chicks. It was decided to make a systematic study of this problem, and the following is a first rep