They have a flexible cell membrane which means they can squueze through small gaps in the capillaries to travel to where they are needed in the body.
Letlalo leno le le gakgamatsang le dira gore disele di kgone go ngaologa di nne ditshesane e le gore di kgone go feta mo ditshikeng tse dinnye mme ka tsela eo di kgone go ya kwa dikarolong tsotlhe tsa mmele.