Assertion: antibiotic's structure | /r/HasProperty | confirmed using x-ray crystallography
Facets:
value: by dorothy crowfoot hodgkin
type: OTHER
value: in 1945
type: TEMPORAL
Source sentences:
text: The chemical structure of penicillin was first proposed by Edward Abraham in 1942 and was later confirmed in 1945 using X-ray crystallography by Dorothy Crowfoot Hodgkin, who was also working at Oxford.