[Genetic aspects of experimental tuberculosis in mice].

Susceptibility of inbred mouse strains, their F1 hybrids, offsprings from BC1 and RI strains from CXB pannel to tuberculosis infection was studied. Mice were infected with virulent strain of M. tuberculosis H37Rv. All F1 hybrids, with the exception of (BRSUNT X I/St)F1, showed superresistance, due apparently to heterosis effect; (BRSUNT X I/St)F1 demonstrated an intermediate level of resistance, as compared with parental strains. Analysis of [(BALB/c X B6)F1 X B6]BC1, [(BALB/c X B6)F1 X BALB/c]BC1 offsprings and RI strains indicated that strains BALB/c and B6 have different alleles of at least two genetic loci mediating susceptibility to tuberculosis.