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Variolation consisted of...

Variolation consisted of

A

Injecting viriolous matter

B

Injecting heat-killed a viriolous matter

C

Scratching an area over a vein and pour small matter from a small pox pustule

D

Scratching vein and pouring viriolous matter into blood.

Text Solution

Verified by Experts

The correct Answer is:
C
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