Phenotypes and genotypes of haptoglobin alpha isoforms in Mexican patients. A). Selected area of the protein profiles obtained from 20 different and independent samples, representative of the total 50 samples collected for this study. Protein samples (50 μg) from ascitic fluids were processed for 2D after HAS/IgG depletion. B). Hp alpha genotypes (1–1, 1–2, 2–2) present in all 50 samples were determined and counted. C). Graph showing the number of protein spots detected by 2D in the selected area for each of the 50 patients according to their clinical stage.