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Medical Term:

Oxford unit


Definition: the minimum amount of penicillin that will prevent the growth of Staphylococcus aureus over an area 26 mm in diameter in a standard culture medium; 1 unit equals 0.6 mcg of crystalline sodium salt of penicillin.

Synonym(s): Florey unit

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.