Effectiveness of cell sorting. Differential expression of transcripts that code for surface antigens targeted by MACS sorting. (A) luminal (CD26), (B) basal (CD104), (C) stromal (CD49a), and (D) endothelial (CD31). ANOVA results indicate significantly different expression at P < 0.001 (***) and P < 0.01 (**). Cell sorting enriched for the transcripts belonging to the gene that codes for the surface antigen that was the target of cell sorting.