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Asked by Jose-Osuna to Carmen, Daniel, Laura, Noel, Steph on 17 Mar 2015.
Question: Does every living thing have immune system?
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Noel Carter answered on 17 Mar 2015:
Yes, even bacteria have very simple systems that could be described as immune systems. The immune system just gets more complicated as you get higher up the evolutionary ladder so Human have more complex immune systems than fish.
Comments
Jose-Osuna commented on :
Do you think dinasoaurs had immune system?
Pravi29 commented on :
Some children are born without immune systems.