sensitizing injection

sen·si·tiz·ing in·jec·tion

an injection that sensitizes a person so that subsequent exposure to the antigen (allergen) evokes an allergic response.

sen·si·tiz·ing in·jec·tion

(sensi-tīz-ing in-jekshŭn)
Injection that sensitizes a person so that subsequent exposure to the antigen (allergen) evokes an allergic response.