What nonspecific cells kill virus-infected cells and tumor cells by cell to cell contact?
A)mast cells
B)Natural killer cells
C)T lymphocytes
D)B lymphocytes

Question

Quizplus · Accepted Answer

Natural killer cells are nonspecific immune cells that kill virus-infected cells and tumor cells by direct cell-to-cell contact, without the need for prior sensitization or recognition of a specific antigen. Mast cells are involved in allergic reactions and tissue inflammation. T lymphocytes and B lymphocytes require prior sensitization to specific antigens to become activated and kill target cells.

What Nonspecific Cells Kill Virus-Infected Cells and Tumor Cells by Cell