the human harvey ras oncogene , c-ha-ras 1 , has been located by jhanwar et al . immediately adjacent to this region at band 11p14 .1 , although several groups have assigned the gene more distally at band 11p15 . we have examined tumour dna from two cases of sporadic wilms ' tumour , and report here that in both cases one of the two constitutional c-ha-ras 1 alleles was absent .
C0086418
human
C0034678
ras