Figure 1. Distribution of S1P and DH-S1P in human blood samples.
Human lipoprotein fractions were prepared using ultracentrifugation and the levels of S1P (A) and DH-S1P (B) were measured (n = 5);*P<0.01, **P<0.05. The distribution of apoM and apoA-I was determined using a Western blot analysis (C).