https://diler.tube/videos/watch/2e29b22e-f275-4fe8-b1ec-5ae674f01377 Blood consists of red blood cells, white blood cells, platelets and plasma. White blood cells are our warriors; the army inside our body that protects us from infectious disease and foreign invaders. They make up less than 1% of our blood. Our body has a first line of defence, which we saw in the video on ‘bodies defence against pathogens’, but when this fails our white blood cells kick into action. White blood cells are the cells of our immune system. There are two types of white blood cell; phagocytes and lymphocytes. Phagocytes have a multi-lobed nucleus within cytoplasm. They are made in your bone marrow, and they actively seek out and engulf bacteria. They will even squeeze out of the blood, through capillary walls, to reach infected tissue. There are different types of phagocytes, with neutrophils being the most common. Sat, 14 Nov 2026 00:54:25 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://diler.tube https://diler.tube/lazy-static/avatars/f58b270a-6076-478a-ad43-3888a532ecb4.png https://diler.tube/videos/watch/2e29b22e-f275-4fe8-b1ec-5ae674f01377 All rights reserved, unless otherwise specified in the terms specified at https://diler.tube/about and potential licenses granted by each content's rightholder.