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.
St. Louis Cardinals. 1  Status: Disabled 10-Day. 2  Full Name: Alexander Reyes. 3  Age: 22 (August 29, 1994)  Birthplace: Elizabeth, 1  NJ. Bats/Throws: R/R Ht: 6' 3 Wt: 2  175. MLB Debut: 08/09/ 3 2016. School: Elizabeth,  NJ. View Full Bio Â».