Genetically null mice reveal a central role for epidermal growth factor receptor in the differentiation of the hair follicle and normal hair development. - Hansen,L.A.; Alexander,N.; Hogan,M.E.; Sundberg,J.P.; Dlugosz,A.; Threadgill,D.W.; Magnuson,T.; Yuspa,S.H. (Am J Pathol, 1997)