to clarify whether insulin-like growth factor i ( igf-i ) is an autocrine growth factor of rat medullary thyroid carcinoma ( mtc ) cell line , 6-23 ( clone 6 ) , igf-i binding to mtc cell membranes , igf-i levels in the conditioned culture medium of mtc cells and the effects of igf-i on methyl- [ 3h ] thymidine incorporation to mtc cells were examined .
C0007603
cell membranes
C0007634
cells