Immunity produced when the host's own body makes antibodies after exposure to antigens is called

1. When a host is exposed to antigens, antibodies are produced in the host body. 2. That is active immunity. 3. It can be induced deliberately by immunisation or naturally during infection. 4. Active immunity is slow and takes time to give its full effective response. _Source: syllabus Biology Ch7 'Human Health and Disease', section 7.2.3_