1723534562.png){kind=small}
IPMAT Indore 2022 - VA Q54 Explanation
December 28, 2024
Explanation:
(b)
Refer to the first line of the second paragraph, “By 1798, Jenner had succeeded in demonstrating the protective quality of the cowpox virus against smallpox, by putting on record details of 23 cases, contracted either casually or by direct inoculation.”