Which type of cells are responsible for killing pathogens in the body?

Lymphocytes play a crucial role in the immune response by targeting and eliminating pathogens such as bacteria and viruses. They are a type of white blood cell specifically designed to recognize and respond to foreign invaders in the body. There are different subtypes of lymphocytes, including T cells and B cells, which have specialized functions in identifying and destroying pathogens—T cells can directly attack infected cells, while B cells produce antibodies that neutralize pathogens.

The other cell types mentioned do not directly participate in killing pathogens. Erythrocytes, or red blood cells, are primarily responsible for transporting oxygen throughout the body and do not play a direct role in immune defense. Thrombocytes, or platelets, are involved in blood clotting and wound healing rather than in fighting infection. Leukocytes is a broader term that encompasses various types of white blood cells, including lymphocytes, but it is not specific to those that actively kill pathogens. Thus, while leukocytes are important in the immune response, the specific function of killing pathogens is attributed specifically to lymphocytes.