Overview of the Immune System
Innate immune (resistance) factors are present before infection and
nonspecific - i.e., work all the time and effective against many different kinds of
External resistance factors - those which act on
1. Which statement about hypersensitivity is correct?
a. Type III and type II hypersensitivity are similar, but differ in that type III
reactions involve responses to self antigens and type II reactions do not.
b. Histamine and leukotrienes, both released
o CharacterizedbyTbetexpressionandIL2,IFN andTGF