Any cell in the body contains the genes required for apoptosis ("death program"), but their transcription starts only when the cell receives an appropriate signal.

Select the correct characteristics of the membrane attack complex (MAC):

Give a brief characterization of the biological function of T-cell TCR receptor:

Cytotoxic T-cells can sometimes bind free viruses and initiate their death.

Match a correspondence between the types of innate immune receptors and the characteristics of their activation:

The balance between Th-1 and Th-2 cells is regulated by gamma interferon and IL-12.

Once virus-infected cells are killed, cytotoxic T-cells are not damaged and can continue to kill other cells infected with the same virus.

Select immune inhibitory receptors:

Select the correct characteristics of phagosomes:

Complete the definition. Vacuoles where proteolysis of foreign materials absorbed during phagocytosis occurs are called .