
Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1945
1946
1943
1944
1955; 1830
2000-100 BCE
1945
1946
1946
1943
1946
1938 and 1951
1944-1945
1946
1903 (original); 1982 (model)
1990-96
circa 1945
1830 (original); 1967 (model)
1952-3
1839 (original); circa 1988 (replica)
1943
1944
4000-2001 BCE
1943-1945
1801-1892 (prepared); 1946 (element replaced)
1945-1946
1944
1943-04-26
1943-06-15
1943-05-12
1943-04-26
1943-06-15
1943
1943-02-17
1943-06-15
1943-05-12
1943-02-17
1943-07-28
1943-06-29
1943
1944-12-01
1943-04-26
1943-03-22
1943-04-12
1943-05-12
1943-06-15
1943-04-15
1943-01-13
1943