Abstract
Summary
The respective local actions upon the feather papilla of thyroxine and of progesterone were examined. Application was made by intradermal injection to the immediate vicinity of the resting, quiescent and plucking-stimulated papillae. thyroxine was effective in causing proliferation in all 3 circumstances; progesterone proved negative with this technic in the resting and quiescent states; it may have exerted a slight augmentation in the third.
Get full access to this article
View all access options for this article.