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Model Paper 3 — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYModel Paper 31 Mark
MCQ
Edward Jenner discovered-
  • A
    Polio vaccine
  • B
    Immunity against polio
  • C
    Vacciniation against small pox
  • D
    Immunity against small pox
✓

Answer

self

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