virus containing the s1 gene segment from reovirus type 1 , which codes for the sigma 1 polypeptide ( i.e. , hemagglutinin ) , infected cells in the anterior pituitary and induced autoantibodies to gh , whereas virus containing the s1 gene segment from reovirus type 3 failed to infect cells in the anterior pituitary and did not induce autoantibodies to gh .
C0032016
anterior pituitary
C0037663
gh