ScienceBiologyYour Immune System: Natural Born Killer – Biology #32Hank tells us about the team of deadly ninja assassins that is tasked with protecting our bodies from all the bad guys that want to kill us - also known as our immune system.By Watch and Study - Feb 17, 2016164 RELATED ARTICLESMORE FROM AUTHOR BiologyWhy do people have seasonal allergies? AnimalsHow do schools of fish swim in harmony? BiologyWhy Aren’t There Giant Insects? BiologyBird or Dinosaur? BiologyAltruismTell us what you think!