Erythroid expression of Lu and Lu(v13) during HU treatment. Lu and Lu(v13) were immunoprecipitated and revealed by WB. (A) Typical result showing the presence of Lu (85 kDa) and Lu(v13) (78 kDa) before and during HU treatment. (B) Box and whiskers represent the Lu/Lu(v13) ratio of 5 pre-post group patients during HU treatment; internal horizontal line, median; lower and upper box limits, 25th and 75th percentiles; and T-bars, range.