Final answer:
Platelet is not a type of white blood cell. White blood cells, or leukocytes, consist of different types such as monocytes, neutrophils, and macrophages which aid in the immune response.
Explanation:
Platelet is not a type of white blood cell. White blood cells, also known as leukocytes, include various types such as monocytes, neutrophils, macrophages, and lymphocytes. Monocytes are the largest type of leukocyte and differentiate into macrophages, playing a crucial role in the immune response by engulfing pathogens.
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