Your immune system uses a huge army of defender cells - different types of white blood cell. You make about 1000 million of them every day in your bone marrow. Some of these cells, called macrophages, constantly patrol your body, destroying germs as soon as they enter. This is your 'natural' or inborn immunity. But if an infection begins to take hold, your body fights back with an even more powerful defence of T- and B-cells. They give you acquired immunity, so that the same germ can never make you as ill again.
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i'm pretty sure it is the right one
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if im wrong sorry
Answer: Estrus is a fertile stage of the female reproduction cycle
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I apologize for anything I may have done to offend you, can you please tell me things that I can fix on my part? Please tell me if this helps!
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