Antigenic (adjective)

Relating to or having the characteristics of an antigen, which is a substance that is recognized as foreign by the immune system and triggers an immune response.

Origin:

From the prefix "anti-" meaning "against" and the word "gen" meaning "produce" and the suffix "-ic" meaning "of or related to".

Examples:

1. An antigenic substance is one that can trigger an immune response.
2. Antigenic proteins are the most common type of antigens.
3. Antigenic drift and antigenic shift are the two main mechanisms that generates genetic variation in influenza viruses.
4. Antigenic markers are used to identify a type of microorganism.
5. An antigenic peptide is a short string of amino acids that can be recognized by the immune system.