among the amines tested , 2,3,4,3- and 3,3,3,4-cyclic polyamines , nh2 ( ch2 ) 6nh2 and nh2 ( ch2 ) 8nh2 had some ability to stimulate polyphenylalanine synthesis , globin synthesis and rat liver isoleucyl-trna formation .
C0032433
polyamines
C0002508
nh2