100 ng of 17-epi-NPD1/17-epi-PD1 methyl ester or vehicle (0.1% ethanol) were administered to mice i.v. in 100 μl of sterile saline, and blood was collected 24 hours later. Serum was analyzed for a panel of common toxicology markers and expressed as the mean ± SD of 3 mice per group. Unpaired, two-tailed t tests were performed for comparisons between vehicle control and 17-epi-NPD1/17-epi-PD1 for each analyte. ALP: alkaline phosphatase, AST: aspartate aminotransferase, ALT: alanine aminotransferase, ALB/GLOB: albumin/globulin, LDH: lactate dehydrogenase.