using c-ha- , c-ki- , and c-n-ras-specific probes in a rna-rna hybridization assay we found enhanced expression of c-ha-ras protooncogene in stomach adenocarcinomas relative to nonneoplastic epithelium , whereas little or no transcription of either c-ki- or c-n-ras was detected .
C0278701
stomach
C0014609
epithelium