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2 votes
Which of these technological advances has improved flu vaccines?

A. Sonograms
B. Blood typing
C. Antiviral drugs
D. Virus strains multiplied in cell cultures

2 Answers

5 votes

Answer: D → Virus strains multiplied in cell cultures

Explanation: I just answered on APEX

User Seanicus
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7.4k points
6 votes
D. is the correct answer

User Rocky Inde
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8.5k points