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Science Bowl Question

📅 NSB Round Robin 2009🎓 HS🔄 Round 5#️⃣ Question 2🌟 BONUS📝 Multiple Choice

Which of the following BEST describes how Pasteur attenuated the rabies virus to create an effective vaccine:

W) by heat-treating the purified virus
X) by treating the live virus with a weak solution of formaldehyde
Y) by passing the rabies infection through a successive series of rabbits
Z) by purifying the protein from the viral capsids
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