Perforins are produced bya) Cytotoxic T cellsb) Suppressor T cellsc) Memory helper T cellsd) Plasma cellse) NK cells: (A) a, (B) b, (C) ae, (D) ad
Answer is C. Perforins 

Perforins are hole forming proteins, cause transmembrane pores through which cytotoxic factors enter the cell and destroy it by apoptosis.
Perforins are produced by:


Cytotoxic T cells   → Robbin's 218
N.K. Cells → Ananthanarayan 126