[69].Animal to animal reproducibility of skin samples resolved by 2-D gel electrophoresis. The 8 independent gels labeled with letters A-H represent skin proteins isolated from 8 individual animals that were sacrificed at 19 weeks of age after 16 weeks on a standard chow (A–D) or high-fat diet (E–H). Gels A, B, C and D on the left side of the figure are from 4 separate, non-diabetic control mice while gels E, F, G, and H on the right side of the figure are from 4 separate diabetic mice. Copyright Wiley-VCH Verlag GmbH & Co.KGaA. Reproduced with permission.