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. Author manuscript; available in PMC: 2017 Jul 1.
Published in final edited form as: J Allergy Clin Immunol. 2016 Mar 3;138(1):123–129.e2. doi: 10.1016/j.jaci.2015.11.037

Figure 3. αT-cat is expressed only in the large, cardiomyocyte-containing pulmonary veins.

Figure 3

Immunofluorescence of large (A) and small (B) pulmonary veins double-labeled for both αT-cat (red) and the more ubiquitously expressed αE-cat (green). Note αE-cat was detected in endothelial junctions (arrowheads) of both large and small veins, as well as the cardiomyocyte junctions (arrows) of large veins. αT-cat was found only in cardiomyocyte junctions of the large veins (arrows). White line defines outer cardiomyocyte boundary of the large pulmonary vein. Boxed insets (right) are vertically arranged as progressive increases in magnification to show cardiac junction staining. Nuclei are stained blue with Hoechst dye.