Dr. Tonegawa won the Nobel Prize for discovering how the body can constantly change its genes to fashion a seeming unlimited number of antibodies, each specifically targeted at an invading microbe or foreign substance.
seeming unlimited number of antibodies, each specifically targeted at
seeming unlimited number of antibodies, each targeted specifically to
seeming unlimited number of antibodies, all specifically targeted at
seemingly unlimited number of antibodies, all of them targeted specifically to
seemingly unlimited number of antibodies, each targeted specifically at
(B) older than any of their supposed (adjective) Mediterranean predecessors. *supposed predecessors
(D) older than any of their supposedly (adverb)Mediterranean predecessors. **supposedly Mediterranean
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