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STD 12 - 7. human health and disease — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 7. human health and disease1 Mark
MCQ
‘Second line of defence' is known as
  • A
    Antibodies
  • ✓
    WBC
  • C
    Liver
  • D
    Blood
✓

Answer

Correct option: B.
WBC
b
It’s obvious.
 

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