SLC25A19 and obesity disorder: That we find a differential degree of Mup transcript(s) enrichment in C57Bl/6J wild type and ob/ob mice when we use the Mup1 primer set vs. the Mup1/2 primer set suggests that within the Mup multigene family there are distinctions regarding the influence of obesity on the degree of differential expression of particular Mup transcript(s).