Additional file 7: of Negative and positive control ranges in the bacterial reverse mutation test: JEMS/BMS collaborative study

Figure S6. Individual dose-response curves showing the positive control articles in the presence of S9 mix were generated from data obtained by each participating laboratory (each laboratory is indicated by a different color). The doses (in Îźg/plate) for each positive control article are the same as those shown in Figs. 6, 7, 8, 9, and 10. S9 fraction was purchased from Kikkoman or Oriental Yeast, and while some laboratories used that same lots, other laboratories used different lots from the same manufacturers. Laboratory identification numbers are indicated on the right-hand side of each figure. (ODP 516Â kb)