Proliferation of Rin cells is suppressed by expression of Cx37-WT but not Cx37-C61,65A. A Proliferation was comparable between iRinCx37-WT and the three clones of iRinCx37-C61,65A when connexin expression was not induced. In contrast, proliferation of induced iRinCx37-WT cells (filled circles, B) was suppressed compared to the iRin clones with induced expression of Cx37-C61,65A. Four growth curves (with or without dox) were performed for each cell line except the iRin37-C61,65A-1C3 clone, for which five experiments were performed. Where error bars are not obvious, they are smaller than the size of the data point