C321 Ouyang xue's experiment

After the professor had seen Mo Fei's blood test, he discovered on Mo Fei's test form a type of cell that did not belong to a human, other than the mutated virus that belonged to the vampire bat.

The professor believed that the reason why Mo Fei wasn't affected by the vampire bat's variant virus yet, was because she had delayed her attack for half a month, was most likely because of this cell