we investigated the copy number and possible rearrangement of the four protooncogenes , c-myc , n-myc , n-ras , and c-erb-b , in dna from seven untreated primary cancers or metastases of medullary thyroid carcinoma and an established human medullary thyroid carcinoma cell line , tt , using the southern blotting technique .
C0086661
c-myc
C0086418
human