Which principle is NOT referred to Koch’s postulates?

Which principle is NOT referred to Koch’s postulates?

A.The understanding of infectious disease as being caused by bacteria

B.Koch used both animal studies and laboratory methods to identify the specific cause

C.Koch isolated and identified the pathogens responsible for two diseases

D.Koch disagreed with the idea about germ theory.

E.Koch’s state- and university-funded laboratories instituted a rigorous system to find the unique microorganismal

正确答案是D