TY - RPRT TI - Human colony-forming units-erythroid do not require accessory cells, but do require direct interaction with insulin-like growth factor I and/or insulin for erythroid development. AU - K Sawada AU - S B Krantz AU - E N Dessypris AU - S T Koury AU - S T Sawyer PY - 1989 DO - 10.1172/jci114070 UR - https://pubmed.ncbi.nlm.nih.gov/2651478/ ID - 2651478 ER -