Multiple Choice
Consider two isolates A and B: microbe 'A' had a LD50 of 5 × 104 while microbe 'B' recorded a LD50 of 5 × 107. Which isolate is more virulent?
A) cannot tell with information provided
B) microbe A
C) microbe B
D) equally virulent since they killed the animals
E) the values indicate that neither one is virulent
Correct Answer:

Verified
Correct Answer:
Verified
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