Scientists haven't found a vaccine for cancer yet.
Source: tatoeba (682299)
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18 total sentences available.
Scientists haven't found a vaccine for cancer yet.
Source: tatoeba (682299)
Jonas Salk developed the polio vaccine in 1952.
Source: tatoeba (682300)
In 2010, there was a shortage of H1N1 vaccine.
Source: tatoeba (682301)
The polio vaccine was first produced by an American scientist.
Source: tatoeba (2427801)
Showing 4 of 18 available sentences.