The data are separated by sex and presented in tables by individual study group and time on study. Where necessary, results wer e converted to match those units more commonly used and presented here. Due to the variation in methodology used to obtain these values, and the intrinsic variation among the different studies, it would be inappropriate and misleading to combine individual group means into overall means or medians. Table 1 presents codes relating to the analytical methods or instrumentation used to obtain the means for each parameter measured in each study group. These codes are identified in Table 2 .
Information is arranged alphabetically by study code for easier access.
In study group A, methodology was changed during the course of a study. The site of blood draw is not given as it was not available in the final reports from which these data were extracted. To determine the age of the rats, add approximately 6 weeks to the study interval since, in general, dosing started when the rats were about 6 weeks of age. In many cases, a single study group had blood analysis performed at several different intervals, all of which are reported here under the same study identification code. Data in these tables are presented by increasing study interval, and consequently by increasing animal age.