How do allergens typically gain entry into the body?

Select one:

A$.$ They enter through the skin.

B$.$ They enter through the airway.

C$.$ They enter throuph the digestive tract.

D$.$ All three of these are typical portals of entry for allergens.

E$.$ Aliergens only enter the body through subcutaneous injections

Mast cells and basophils have a direct impact on tissues as a result of an allergic reaction.

Select one:

True

False

Cytokines include: histamine, prostoglandin, leukotriene, platelet$-$activating factor, bardykinin and serotonin.

Select one:

True

False