Which statements about macrophages are correct?
1 More are found in tissues such as the lungs, than in the blood.
2 They have a role in antigen presentation.
3 They can engulf pathogens, dust particles and damaged body cells.
1, 2 and 3
2 )
1 and 2 only
3 )
1 and 3 only
4 )
2 and 3 only
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