since the ratio of conversion of free retinol ( labeled ) to retinyl esters remained constant in the treated st ( which contained only sertoli cells , the germinal epithelium having been destroyed ) and in the control st ( which contained both sertoli cells and germinal epithelium ) , we conclude that the sertoli cells are the site of retinol esterification in the testis st .
C0039597
testis
C0036630
st