Fig. 3

Skin, histological findings. A Skin area with marked alopecia from the British blue cross calf with hypohidrotic ectodermal dysplasia. The skin from the affected calf displays a reduced number of hair follicles (black arrows), which also are smaller in size. In addition, there is a decreased number of anagen hairs. Apocrine glands are marked with black stars, and white arrows indicate the sebaceous glands. B Skin from a normal 4.5-months-old calf