What type of leukocyte provides immunity by developing antibodies and protect against formation cancer cells?

The type of leukocyte that provides immunity by developing antibodies and protects against the formation of cancer cells is the lymphocyte, specifically the B lymphocyte (also called B cell). B cells play a crucial role in the body's adaptive immune response, which is responsible for recognizing and defending against specific pathogens and antigens. Here's how B lymphocytes provide immunity:

Antibody production: B cells have the ability to produce antibodies, which are specialized proteins that can recognize and bind to specific antigens (foreign substances). When a B cell encounters an antigen, it undergoes a process called clonal expansion, where it rapidly divides to form a large number of antibody-producing cells called plasma cells. These plasma cells secrete large quantities of antibodies into the bloodstream, where they can bind and neutralize the antigens.

Memory cells: In addition to producing antibodies, some B cells differentiate into memory cells. Memory cells "remember" the specific antigens they encountered, enabling a faster and more robust immune response if the same antigen is encountered again in the future. This immunological memory is essential for long-term protection against infections.

Antigen presentation: In certain cases, B cells can also act as antigen-presenting cells (APCs). They can display antigens on their surface and present them to other immune cells, such as T cells, to initiate an immune response.

Role in immune surveillance: B lymphocytes contribute to the body's immune surveillance system, which helps identify and destroy abnormal or potentially cancerous cells. They produce antibodies that can recognize and bind to cancer-specific antigens, marking the cancer cells for destruction by immune effector cells.

By developing antibodies and aiding in immune surveillance, B lymphocytes provide essential protection against the formation and spread of cancer cells, complementing the actions of other immune cells like T cells and natural killer (NK) cells. Together, these immune components work to maintain the body's overall immune defenses and prevent various diseases, including infections and certain types of cancer.