Attack of the killer white blood cells

Forget werewolves, vampires and George Osbornes. The scariest thing in the world isn’t out there waiting to get you, it’s inside you. It’s always ready – ready to pounce on its unsuspecting victims, to eat them in a single bite. Thankfully this monster is on our side – the humble white blood cell. The video below shows one type of white blood cell, a phagocyte, tracking and engulphing a rogue bacterium. Once surrounded, the bacterium is sprayed with digestive enzymes and toxic chemicals. After being pulverised, the raw materials of the bacterium make a nice hearty meal for the white blood cell. Pretty gruesome stuff.

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