the existence of strains of mice with rates of incidence of lung tumors that differ as widely as do the two that we have studied , the relatively high incidence of pulmonary growths among mice of tumor parentage as compared with mice from non-tumor parents , and the fact that females from a strain in which pulmonary tumors are rare when crossed with individuals from a strain in which they are frequent give a fairly high rate of incidence of the growths among the first and second filial generations , -all these facts indicate that susceptibility to the development of tumors in the lung is an inherited character .
C0024121
pulmonary
C0024109
lung