TitleAlopecia areata in two black Angus cows.
Publication TypeJournal Article
Year of Publication2012
AuthorsValentine, BA, Bildfell, RJ, Packham, D, Scott, DW, Miller, WH
JournalJournal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc
Volume24
Issue2
Pagination405-7
Date Published2012 Mar
KeywordsImmunohistochemistry
Abstract

Adult onset progressive alopecia and leukotrichia developed in 2 registered black Angus cows, aged 6 and 7 years. Histopathologic findings in skin were prominent melanin clumping and degeneration of matrix cells with formation of giant multinucleate cells within hair bulbs, accompanied by peribulbar melanin incontinence and fibrosis and dystrophic hair shafts. Intrabulbar and peribulbar lymphocytes were cluster of differentiation (CD)3-positive T cells. Findings were characteristic of alopecia areata.