An elution procedure for visualization of adult hemoglobins in human blood smears.

A procedure is described for visualization of cells that had only fetal hemoglobin apnormal and mutant adult hemoglobins in peared as clear ghosts. Analyses of cord human blood smears. After extraction of blood from newborn infants indicate that, blood smears with a concentrated poalthough most erythrocytes contain only Hb tassium phosphate buffer (2.76 M, pH 7.2), F and a few contain only Hb A, many erythrocytes that had adult hemoglobins contain both hemoglobins A and F. stained bright red with erythrosin, whereas