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Earlier discussion
2 older comments kept for context.
Favour Onwuchekwa
Red Blood cells are also called "ERYTHROCYTES". option [A] is 💯% correct.
Oluwaseun Adeyemi
Red blood cell aslo kn own as erythrocytea disk-shaped, biconcave cell in the blood that contains hemoglobin, lacks a nucleus, and transports oxygen and carbon dioxide to and from the tissues
White blood cells or leukocytes, are cells of the immune system involved in defending the body against both infectious disease and foreign materials.
Platelets, or thrombocytes or yellow blood cells, are very small, irregularly shaped clear cell fragments (i.e. cells that do not have a nucleus containing DNA. Platelets are a natural source of growth factors. They circulate in the blood of mammals and are involved in hemostasis, leading to the formation of blood clots.
Phagocytes are cells that protect the body by ingesting harmful foreign particles, bacteria, and dead or dying cells