7Laver J, Duncan E, Abboud M, et al. High levels of granulocyte and granulocyt-macrophage colony-stimulating factors is cord blood of normal full-term neonates [J]. J Pediatr, 1990, 116: 627-632.
8Carow CE, Hamgoc G, Broxmeyer HE, et al. Human multipotential progenitor cells (CFU-GEMM) have extensivereplanting capacity for secondary CFU-GEMM: an effect enhanced by cord blood plasma [ J ]. Blood, 1993, 81: 942-949.
9Carow C E, Hangoc G, Broxmeyer H E, et al. Human multipotential progenitor cells (CFU-GEMM) have extensive replanting capacity for secondary CFU-GEMM: an effect enhanced by cord blood plansma [J]. Blood, 1993,81(4) :942-949.