Gradual Increase In Complexity Research Articles

The serological response to Aspergillus fumigatus in experimental mycotic abortion in sheep.

SUMMARY The serological response to Aspergillus fumigatus in experimental mycotic abortion in sheep was examined. Infected ewes developed precipitins and complement-fixing antibodies to A. fumigatus mycelial antigens following the inoculation of spores. A gradual increase in complexity of the precipitation patterns given by immunodiffusion tests extended over several months and overlapped the times of abortion, but precipitins to individual A. fumigatus antigens could not be specifically associated with placentitis or abortion. Following abortion, the precipitation patterns decreased in complexity, although in most cases some activity persisted. Complement-fixing antibodies also developed before abortion and erratically declined in the post-abortion period.

THE TESTIS HORMONE

Note.— This article and the articles in the previous issues ofThe Journalare part of a series published under the auspices of the Council on Pharmacy and Chemistry. Other articles will appear in succeeding issues. When completed, the series will be published in book form.—Ed. The testicle exercises at least two biologic functions of utility in the organism, the primary of which is maturation of germ cells and the secondary the secretion of one or more substances known as the testis hormone. The primary function is much the older and is exercised not only in vertebrates but in invertebrates as well. Hormone secretion, however, appears to be restricted to the vertebrates and to have undergone a gradual increase in complexity; it is on the accessory organs of reproduction that the influence of the testicular hormone is exercised. In some lower fish the sex cells are merely liberated from the gonad

THE CYTOLOGY OF THE INTERSEXUAL FLOWERS OF MERCURIALIS ANNUA—A MORPHOGENETIC STUDY

American Journal of BotanyVolume 21, Issue 10 p. 651-672 Article THE CYTOLOGY OF THE INTERSEXUAL FLOWERS OF MERCURIALIS ANNUA—A MORPHOGENETIC STUDY Cecil Yampolsky, Cecil Yampolsky 230 Franklin Ave., Grantwood, N. J.Search for more papers by this author Cecil Yampolsky, Cecil Yampolsky 230 Franklin Ave., Grantwood, N. J.Search for more papers by this author First published: 01 December 1934 https://doi.org/10.1002/j.1537-2197.1934.tb04994.xCitations: 3AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume21, Issue10December 1934Pages 651-672 RelatedInformation