_________ are always inoculated in the body before the occurrence of desease
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ग्ग्घ्ग्ग्त्त्र्त्युउउ?उउज्क्क्झुय्त्त्त्त्त्य्य्य्यु
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Vaccines
Explanation:
Vaccines contain weakened or dead germs of a particular disease. In response of this, body makes antibodies against that particular disease causing agent. So when actual germs enter body, already present memory cells at once detect them and immune system becomes active thus disease can't occur.
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