What are the terms “endogenous” and “exogenous” used to describe antigens


Notice: Trying to access array offset on value of type bool in /home/onliiuxo/public_html/wp-content/themes/betheme/functions/theme-functions.php on line 1490

Notice: Trying to access array offset on value of type bool in /home/onliiuxo/public_html/wp-content/themes/betheme/functions/theme-functions.php on line 1495

What are the terms “endogenous” and “exogenous” used to describe antigens


Notice: Trying to access array offset on value of type bool in /home/onliiuxo/public_html/wp-content/themes/betheme/functions/theme-functions.php on line 1490

Notice: Trying to access array offset on value of type bool in /home/onliiuxo/public_html/wp-content/themes/betheme/functions/theme-functions.php on line 1495

What are the terms “endogenous” and “exogenous” used to describe antigens, and what type of immunity each one stimulates. How does this relate to the effectiveness of vaccines?