Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Biology Health and Disease

B-lymphocytes produce a protein protector layer to fight microbes in our blood. These proteins are called ___________.

1

Heavy Chain

2

Pathogen

3

Antibody

4

More than one of the above

5

None of the above

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