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Medical Definition of Oryzias
1. A genus of cyprinodontid fish that is an egg layer as opposed to others of the same order which are livebearers. It is used extensively in testing carcinogens. (12 Dec 1998)
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1. A genus of cyprinodontid fish that is an egg layer as opposed to others of the same order which are livebearers. It is used extensively in testing carcinogens. (12 Dec 1998)