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Tema [17]
3 years ago
11

The complement system is a ___ barrier of the immune system

Biology
1 answer:
sladkih [1.3K]3 years ago
3 0
I think it's a chemical barrier.
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<u>Option:</u> D

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This phase is very important for the head of nation because allocating fund is easy but in right hands is trick, so the authority to whom fund is handover for further processing via right channel and to targeted audience is uttermost priority, also in time.  

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Neporo4naja [7]

Answer:

c

Explanation:

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