Using combinations of unconjugated and conjugated antibodies, we characterized subpopulations of exosomes from plasma and total blood and found that subpopulation compositions of exosomes from plasma and total blood of HFs and BCPs were similar: CD24/CD9 > CD9/CD81 > CD24/CD63 ≈ CD9/CD63 (Table 3). The gene discussed is CD9; the disease is Hand-foot syndrome.