Lymphocytes意思

"Lymphocytes" are a type of white blood cell that are an essential component of the immune system. They play a crucial role in defending the body against infections and diseases. There are two main types of lymphocytes: B cells and T cells, which are produced in the bone marrow and then migrate to the thymus and the bone marrow, respectively, to mature.

B cells primarily function by producing antibodies, which are proteins that can recognize and bind to specific pathogens, such as bacteria and viruses, marking them for destruction. T cells, on the other hand, can directly kill infected cells or assist other immune cells in doing so.

Lymphocytes are found in various parts of the body, including the lymph nodes, spleen, thymus, and bone marrow, as well as in the bloodstream. They are crucial for adaptive immunity, which is the body's ability to "remember" pathogens it has encountered before and mount a more rapid and effective response upon subsequent encounters.