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.
Answer:
A. Cancers are classified according to the type of tissue they affect
Explanation:
Answer:
1. Are HIV and AIDS the same thing?
2. Can HIV live outside the body?
3. How are HIV and AIDS transmitted?
4. Can you get AIDS by someone having AIDS?
Explanation:
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The treadmill has a bunch of parts & pieces, and one of the most popular 'home fitness' exercise machine that requires the most maintenance. Maintenance of a treadmill would include: cleaning the motor cover, testing the stop/start button, checking lubrication, testing the tension belt, and tightening all the loose parts.
Answer:
coronavirus
Explanation:
corona virus causes sever respiratory illnesses and also leads to death in some stages.
