comparison of amino acid sequence of whale somatotropin fragments with that of sheep , beef and human somatotropin has revealed that 57 out of 61 identified amino acid residues of whale somatotropin repeat amino acid residues in similar regions of beef somatotropin , 56 -- of sheep and only 42 -- of human somatotropins .
C0037663
somatotropin
C0169964
human somatotropins