KidzSearch - Safe Search Engine     

   web | images | video | facts | wiki | news | games | kidztube | apps








report a search problem







COMPANY RESOURCES LINKS SOCIAL
contact us education daily journal home facebook
about us make us your default search kidztalk twitter  
terms/privacy blocking websites kidznet pinterest  
advertise teacher zone wiki    
media link to us learning sites    
business / api solutions add a site image search    
affiliate program kidzsearch apps kidztube    
play youtube on kidzsearch games    
  voice search music    
  report a problem cool facts    
  settings news    
    search help    
    kidznet directory    
         










 mobile version

      Copyright 2005-2021 KidzSearch.com 
A scanning electron microscope (SEM) image of a single human lymphocyte.

The adaptive immune system is made of specialized cells and processes which kill pathogens or prevent their attack.

The adaptive immune system is switched on by the evolutionarily older innate immune system. This older system is non-specific, whereas the adaptive system is tailored to specific targets.

Whereas the innate immune system is found in all metazoa, the adaptive system is only found in vertebrates. It is thought to have arisen in the first jawed vertebrates. view more...