
Ampoule of penicillin
1945
1945
1946
1948
1946
1943
1948
1947
1940
1945
1946
1949
1947
1940
1940-1945
1950
1948
1940
1948
1944
1943
1946
1942
2000-100 BCE
1940
1950
circa 1950
1950
1942
1940-1944
1944-1945
1946
1938 and 1951
1942
1941-1950
1950
1955; 1830
1948
1949
1940-1949
1946-1948
circa 1950
1945
1945-1948
circa 1950
circa 1950
1990-96
1950
1950
1948
1946-1948