title: Slow going for blood substitutes.
authors: R
authors: R
authors: Pool
mesh_terms: D001802:Blood Substitutes / Q000009:adverse effects; D006454:Hemoglobins / Q000627:therapeutic use*; D006801:Humans; D009316:National Institutes of Health (U.S.); D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D001802:Blood Substitutes; D006454:Hemoglobins