Question

T cells kill their target cells by inducing apoptosis via:

a. cytotoxin release on the target cell.
b. the Igα and Igβ pathway.
c. cross-presentation.
d. A & B
e. A, B & C

Answer 1

T cells kill their target cells by inducing apoptosis via cytotoxin release on the target cell using perforin and granzymes.

Step-by-step explanation:

T cells kill their target cells by inducing apoptosis via cytotoxin release on the target cell.

This is accomplished by the release of perforin and granzymes that invade the infected cell and induce controlled cell death, or apoptosis.

Perforin creates pores in the target cell, and granzymes are proteases that enter the pores and induce cell death.

This mechanism of programmed cell death is a controlled and efficient means of destroying and removing infected cells without releasing the pathogens inside to infect neighboring cells.