extracts of frozen human pituitary glands contain , in addition to normal growth hormone ( hgh ( mr = 22,005 ) , a variant of lower molecular weight ( approximately 20,000 ) ( singh , r. n. p. , seavey , b. k. and lewis , u. j . ( 1974 ) endocrinol . res . commun . 1 , 449-464 ) .
C0037663
normal growth
C3714500
hgh