Which type of blood cells is responsible for fighting infection?

White blood cells, also known as leukocytes, play a crucial role in the immune system by defending the body against infections and foreign invaders. They are key players in identifying and neutralizing pathogens such as bacteria and viruses. There are several types of white blood cells, including lymphocytes, neutrophils, monocytes, eosinophils, and basophils, each with specific functions in immune response.

For instance, lymphocytes are involved in the adaptive immune response, recognizing specific antigens and creating long-lasting immunity, while neutrophils are part of the innate immune response, providing rapid defense against infections. This multifaceted approach allows the body to adapt to and effectively combat a wide variety of pathogens.

In contrast, red blood cells primarily function to transport oxygen throughout the body and do not play a role in immune defense. Platelets are involved in blood clotting, essential for wound healing, and plasma refers to the liquid component of blood that carries cells and various substances but does not have a direct role in fighting infections. The role of white blood cells is thus vital for maintaining health and protecting the body from disease.