Assertion: astatine's number | /r/ObjectUse | used as arsphenamine by paul ehrlich
Facets:
value: by paul ehrlich
type: OTHER
Source sentences:
text: During the 18th, 19th, and 20th centuries, a number of arsenic compounds were used as medicines, including arsphenamine (by Paul Ehrlich) and arsenic trioxide (by Thomas Fowler).