Why is formaldehyde used in making vaccines? (2 points) 2) Which vaccine type is being used for one of the Covid-19 vaccines? (4 points) 3) What is a “vector” and in what cells do these grow? (4 points) 4) Why does it take so long to make a vaccine? (2 points) 5) Why did it take only 6 months or so to create/distribute/vaccinate Covid-19 vaccines? (3 points)


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