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MacConkey agar
Characteristics:
Contains:
1) peptone
2) lactose
3) bile salts
4) neutral red
5) crystal violet
Uses:
1) identification of gram negative bacteria
2) characterization of lactose fermentation properties
a) lactose-fermenting bacterial colonies appear red
b) non-lactose-fermenting bacterial colonies appear white
Related
agar
General
culture (plating) medium
References
Stedman's Medical Dictionary 26th ed, Williams &
Wilkins, Baltimore, 1995