For the railway station in Osaka, Japan, see Universal City Station. Universal City/Studio City, formerly Universal City, is a rapid transit station on the Red Line of the Metro Rail in Los Angeles, California. Serving Universal Studios Hollywood and City Walk.
Specific immunity is the body's learned immune response to disease-causing foreign substances, also referred to as pathogens or antigens. It is also commonly called acquired immunity or adaptive immunity.
1 Active immunity is long lasting immunity produced by the body's own immune system and involves the production of long lasting memory cells.  Active immunity can either be natural, such as from an infection, or artificial, such as from vaccination.