http://www.iflscience.com/health-and-medicine/white-blood-cells-attack Video of white blood cell chasing a bacterium through a field of red blood cells. Click the link for a another video where the cells look more like ants on the attack of a worm. https://imgur.com/K70FQ9n http://www.iflscience.com/health-and-medicine/white-blood-cells-attack