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Mutat Res. 1991 Feb;246(2):255-84.

Recommended protocols based on a survey of current practice in genotoxicity testing laboratories: II. Mutation in Chinese hamster ovary, V79 Chinese hamster lung and L5178Y mouse lymphoma cells.

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CanTox Inc., Oakville, Ont., Canada.


Laboratory protocols and guidelines have been developed for the performance of point mutation assays using Chinese hamster ovary (CHO) cells, V79 cells, and L5178Y mouse lymphoma cells. Since only minor differences in the treatment of CHO and V79 cells exist, these two assays could be combined in one procedural guideline. A second protocol was developed for the mouse lymphoma assay in order to incorporate concerns and methods specific to that cell type and genetic locus. The protocols were based primarily on current laboratory practices as determined by responses to a detailed questionnaire completed by North-American and European governmental, university and contract laboratories involved with in vitro mutation testing. This report identifies those modifications to previously described methodologies which are being used on a regular basis, provides recommendations, and also serves to clarify confusing or inconsistent practices.

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