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.
Poor lambs, they are still in their teens and someone has already slapped a label on them. Post-Millennials, Gen Wii, iGeneration were all floated by USA Today back in 2012, but Gen Z seems to have stuck. Too young to remember 9/11, they have grown up in a world in political and financial turmoil.