Protection against Pneumocystis carinii pneumonia by antibodies generated from either T helper 1 or T helper 2 responses.


To determine whether different antibody isotypes associated with T helper 1 (Th1) or Th2 responses are protective against Pneumocystis carinii, mice with disrupted interleukin 4 genes (IL-4(-/-) mice) or gamma interferon genes (IFN-gamma(-/-) mice) along with wild-type C57BL/6 mice were immunized intratracheally against P. carinii, depleted of T cells in… (More)


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