The Development and Growth of Vibrissae in the House Mouse With Particular Reference to the Time of Action of the Tabby (Ta) and Ragged (Ra) Genes.

Abstract

The order of development of certain vibrissae, found on the head and fore limbs of the mouse, has been determined using observations on the developmental stage and relative length of each follicle at 11, 12, 13, and 14 days foetal age. The length of vibrissal fibres at birth was also utilized.