(A) A total of 2.5 × 10⁴CD34⁺ cells isolated from cord blood were placed in triplicate into wells precoated with H120, H0, or BSA containing serum-free medium and standard growth factors. Adherent and nonadherent cells were counted after 6 days. Hatched areas represent the adherent cell component. (B) A total of 5 × 10³CD34⁺ cells were placed in triplicate into wells precoated with H120 fragment or left uncoated, containing serum-free medium and the standard concentration of growth factors. Adherent and nonadherent cells were counted after 8 days and analyzed by FACS for the proportion of CD34⁺ cells in each fraction. Hatched areas represent the adherent cell component.