যেভাবে খুশী Pop Quiz

What happens when people are injected with dead bacteria?
Choose the right answer:
Option A T- lymphocytes produce antibodies.
Option B B- lymphocytes produce antigens.
Option C T- lymphocytes produce antigens.
Option D B-lymphocytes produce antibodies.
 FuyuumiAmakusa posted বছরখানেক আগে
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