1. What is the first line of defense against infection for the human body?
1 answer:
White Blood cells or WBC's are the cells of your immune system. They are your first defense in fighting off foreign invaders and infectious diseases.
-Medical Student (College Level)
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DNA polymerase .
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Answer: label A - dna
label B - cell membrane
label C - ribosomes
label D - cytoplasm
Explanation:
