A. Syne1, Nup37, Nup43, and Nup188 transcripts were detected in embryonic day 11.0 mouse heart (lane 1), as well as adult mouse atrium (lane 2), valve (lane 3), and ventricle (lane 4). B. Relative expression levels of Nup37, Nup43, Nup188 and Syne1 in adult mouse heart normalized to expression of Gapdh. Data are represented as average of triplicate reactions, with standard deviation error bars.