核酸最早被（ ）发现。 A: Boysen Jensen B: Friederich Meischer C: Johansen D: Went

核酸最早被（ ）发现。 A: Boysen Jensen B: Friederich Meische C: Johansen D: Went

It can be inferred from the passage that when Virchow studied at Friederich Institute, some people believed that______. A: pathological histology was undeveloped B: most diseases were caused by phlebitis C: diseases were created at the cellular level of the body D: medical education should be based on physiology