TKT and lymphoma: Indeed, glutathione concentrations as low as 1 mM completely negate the mutagenicity of MA and EA in the L5178Y/TK+/− mouse lymphoma mutagenicity test up to the highest concentrations of the two acrylates tested, 35 μg/ml, a higher concentration than that previously found to be mutagenic in this test (14 μg MA/ml and 20 μg EA/ml).