Leishmania major: nature of immunity induced by immunization with a mutagenized avirulent clone of the parasite in mice.

Abstract excerpt

A chemically mutagenized avirulent form of Leishmania major was used to immunize BALB/c and C57B1/6 mice against challenge with virulent L. major. Immunity was elicited when the avirulent parasite was injected intravenously or intraperitoneally, but not subcutaneously. In fact, the latter route of immunization sometimes resulted in exacerbation of a subsequent infection with virulent L. major. Mice immunized with...

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