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Figure 5


Fig. 5. Representative micrographs showing immunofluorescent staining with anti-ETA (A,D) and anti-ETB (B,E) receptor antibodies in longitudinal sections of an alligator intra-pulmonary artery (internal circumference: 586 µm). (C,F) Negative controls. (A,B) strong staining for ETA-receptors and weaker staining for ETB-receptors in media and adventitia (20xmagnification). (D,E) strong staining for ETA-receptors and weaker staining for ETB-receptors in endothelial cells (40xmagnification). Arrows in D,E indicate epithelial cells.