Single cells of CD34⁺38⁺DR⁺ and CD34⁺38⁻DR⁺ phenotypes were deposited into single U-shaped wells into serum-free medium and standard growth factors. The wells had been precoated with H120, H0, or BSA or left uncoated. Wells were photographed at 1 and 2 weeks. (A) Proliferation from a CD34⁺38⁺DR⁺ cell at 1 week in a BSA-coated well. Cells are growing in the base of the well. (B) Proliferation from a CD34⁺38⁻DR⁺ cell at 1 week in a well coated with H120. Cells have migrated around and up the sides of the well. (C) Proliferation from a CD34⁺38⁺DR⁺ cell at 2 weeks in a well coated with H120. Cells have proliferated in focal sites around and up the sides of the well.