Lu/BCAM expression and mediated RBC adhesion. (A) Microscopic images of RBCs adhering to TrHBMEC monolayers and laminin 521-coated microchannels at 3 to 6 and 24 months. Original magnification ×20. (B-C) The amount of adherent RBCs/mm² on TrHBMEC-coated channels (n = 15) (B) and laminin-coated channels (n = 15) (C) at 3 to 6, 12, 18, and 24 months. *P < .05, **P < .005, ***P < .001, Wilcoxon test. (D) Mean fluorescence intensity of Lu/BCAM on mature RBCs. ****P < .0001, Wilcoxon test.