- gmat_perfect
- Legendary Member
- Posts: 1083
- Joined: Wed Feb 24, 2010 9:38 pm
- Thanked: 127 times
- Followed by:14 members
Most vaccines are derived from weakened or killed strains of the same virus that they prevent, unlike the derivation of smallpox vaccine from a different virus altogether.
(A) the derivation of smallpox vaccine from a different virus altogether
(B) smallpox vaccine, which is derived from a different virus altogether
(C) smallpox's vaccine, which gets derived from a different virus altogether
(D) when smallpox vaccine is derived from an altogether different virus
(E) the altogether different virus from which smallpox vaccine is derived
[spoiler]
OA: Later[/spoiler]
(A) the derivation of smallpox vaccine from a different virus altogether
(B) smallpox vaccine, which is derived from a different virus altogether
(C) smallpox's vaccine, which gets derived from a different virus altogether
(D) when smallpox vaccine is derived from an altogether different virus
(E) the altogether different virus from which smallpox vaccine is derived
[spoiler]
OA: Later[/spoiler]












