| Literature DB >> 17806265 |
Abstract
Changes in photoperiod cause correlated changes in testes, cloacal glands, cloacal foam, and reproductive behavior of male Japanese quail. The cloacal protrusion may serve as a convenient external index of androgen, permitting repeated measurement without operation on or killing of the animal.Entities:
Year: 1967 PMID: 17806265 DOI: 10.1126/science.157.3785.201
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728