What type of blood cell is identified as leukocyte?

Leukocytes, commonly known as white blood cells, play a crucial role in the immune system by defending the body against infections and foreign invaders. They are essential for the body's ability to respond to pathogens and maintain homeostasis. There are several different types of white blood cells, including lymphocytes, neutrophils, and monocytes, each with specific functions in immune response.

In contrast, red blood cells are primarily responsible for transporting oxygen from the lungs to the rest of the body and returning carbon dioxide for exhalation. Platelets are involved in blood clotting and do not contribute to the immune response. Stem cells are undifferentiated cells that have the potential to develop into different cell types, including red blood cells, white blood cells, and platelets, but they are not classified as leukocytes themselves. Therefore, the correct identification of leukocytes as white blood cells highlights their vital function in immunity.