What is an antigen? Antigen refers to any foreign substance which on entering the body  stimulates the production of antibodies in the body of the  individual as a part of the immune response.
Gen Z Defined. Gen Z consumers range from ages 2 to 19, though the target range for marketers lies from ages 11 to 16. Gen Z is the most diverse and multicultural of any generation in the U.S. -- 55% are Caucasian, 24% are Hispanic, 14% are African-American and 4% are Asian. Gen Z Beliefs.
Generation Z. Generation Z refers to the cohort of people born after the Millennial Generation. There is no agreement on the name or exact range of birth dates. Some sources start this generation at the mid or late 1990s, or from the mid 2000s to the present day.