Macrophages (histiocytes) - are phagocytes - these cells 'eat' particles such as bacteria. These cells are derived from white blood cells called monocytes (see the section on blood).
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Answer:
Antibodies develop to fight off the virus.
Explanation:
Antibodies develop while you get a virus, which helps fight off the virus and protect you from getting it again.
In science, it mean 'Million Years Ago'
It could also be used in astrology and biology
Answer:
Plants.
Explanation:
Producers is an organism in an ecosystem that can make its own food. Plants use a process called "Photosynthesis" in order to make the food it needs to survive. Other organisms have to eat a different organism in order to survive,
Thus, the answer is (A)