White blood cells: Lymphocytes, Phagocytes, , Part of the immune system, Involved in destroying pathogens, Red blood cells: , Biconcave, No nucleus, Contains haemoglobin, Transports oxygen and carbon dioxide around the body, Plasma: , Liquid part of the blood, Light yellow in colour, Contains and transports important substances around the body, Main component of the blood (about 55%),

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