Adaptive immunity is stimulated by?

/in /by

The structure in the thymus that prevents foreign substances from entering the thymus is the a. thymic corpuscle barrier
b. blood-thymic barrier
c. surface membrane barrier
d. capsular barrier
e. thymic filter
Adaptive immunity is stimulated by
a. Antigensb. Histaminesc. Antibodies
d. Complement
e. plasma proteins