0 the situation in which the body produces its own antibodies (= substances in the blood that fight disease) -- （身體的）自動免疫（性），主動免疫（性）
A possible explanation for these findings could be that animals kept at home shed oocysts to which occupants are regularly exposed, which could confer active immunity.
Active immunity often involves both the cell-mediated and humoral aspects of immunity as well as input from the innate immune system.
This is in contrast to vaccines that provide active immunity.
Both types stimulate active immunity against a future infection.
The primary significance of passively acquired antibody is that it interferes with the development of active immunity.
Both provide active immunity against a future infection.
A vaccine is an antigenic preparation used to produce active immunity to a disease, in order to prevent or reduce the effects of infection by any natural or wild pathogen.
