Home Science Biology Your Immune System: Natural Born Killer – Biology #32 ScienceBiology Your Immune System: Natural Born Killer – Biology #32 Hank 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, 2016 259 RELATED ARTICLESMORE FROM AUTHOR Animals World’s Fastest Animal Biology Why do people have seasonal allergies? Animals How do schools of fish swim in harmony? Biology Why Aren’t There Giant Insects? Biology Bird or Dinosaur? Tell us what you think!