Abstract
Summary
Isoniazid-resistant, catalasedeficient strains of tubercle bacilli are strikingly less pathogenic for hamsters than for CF1 mice. Neither of these species of animals manifests much tuberculin hypersensitivity. Therefore, the differences in susceptibility of different animal species to such strains of tubercle bacilli cannot be consistently related to differences in ability to develop tuberculin hypersensitivity during the course of tuberculous infection.
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