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.
From Jay Z To Eminem, 10 Rappers Over 40 Years Old. (Photo : Getty Images/Theo Wargo) 10 rappers over the age of 40. Earlier this week, Atlanta rapper Young Thug told GQ that Jay Z was too old to be rapping. If you're 30, 40 years old, you're not getting listened to by minors, Young Thug said. Like, Jay Z has some of the sickest lyrics ever, but I would never buy his CD, just because of my age and because of his age..