the great majority of membrane-bound polysomes in these two cell types ( 81 % in somatotropes , 78 % in mammotropes ) have an approximately circular shape and contain an average of 6.8 ( somatotropes ) or 6.5 ( mammotropes ) ribosomes , which is an appropriate size for translation of the polypeptide hormones produced by these cells .
C0035553
ribosomes
C0007634
cells