The contradiction is they got the same results without inputting a supposed virus sample. Which means it's not the variable they call "virus" that's causing the effects observed but something else used in the culturing - the monkey kidney cell line, the bovine fetal serum, the antibiotics, the enzyme trypsin.
Why not? What is the contradiction?
The contradiction is they got the same results without inputting a supposed virus sample. Which means it's not the variable they call "virus" that's causing the effects observed but something else used in the culturing - the monkey kidney cell line, the bovine fetal serum, the antibiotics, the enzyme trypsin.