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[Lethal infection with BCG in thymectomized mice].

Investigations carried out on CBA mice demonstrated that adult mice to which mycobacteria BCG were injected intravenously 12 months after thymectomy (in a dose of 2 mg for a period of 2 1/2 months) died of disseminated BCG infection against the background of depression of hypersensitivity of delayed type. The usual vaccine process developed in the sham-operated animals.