SERPINB3 and lung cancer: These data suggest that the small subsets of 12.5% STS genes received by these RC strains contain either predominantly susceptible (CcS-11, CcS-19), or predominantly resistant (CcS-10, CcS-20) alleles at most colon (Scc) and lung cancer (Sluc) genes, suggesting their pair-wise linkage or identity (Figure 2A upper).