A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
D001671
Biochemistry
The study of the composition, chemical structures, and chemical reactions of living things.
D014481
United States
A country in NORTH AMERICA between CANADA and MEXICO.
D049711
History, Modern 1601-
The period of history from 1601 of the common era to the present.
History, Modern,Modern History,History of Medicine, Modern,Medicine, Modern,Modern History (Medicine),Modern Medicine,1601- History, Modern,History, Modern (Medicine),History, Modern 1601,Modern 1601- History