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. 2020 Nov 5;10:19201. doi: 10.1038/s41598-020-76062-w

Figure 1.

Figure 1

Preparation of 3D cardiac microtissues. (a) Cellular components of prepared human iPSC-derived generated cardiac tissue sheets (n = 13). CM, cardiomyocytes; EC, vascular endothelial cells; MC, vascular mural cells. (b) Representative histological evaluations of 3D cardiac microtissues. Left: haematoxylin–eosin (H-E) staining; Middle: Sirius red (SR) staining; Right: cardiac isoform of troponin-T (cTnT) immunostaining. Scale bars = 50 µm. (c) Representative fluorescent immunostaining of 3D cardiac microtissues. Left: Double staining of cTnT (CMs) and calponin (MCs). Right: Staining of CD31 (ECs). DAPI, 4′,6-diamidino-2-phenylindole. Scale bars = 100 µm. In (b) and (c), Biorevo BZ-9000 (https://www.keyence.com/products/microscope/fluorescence-microscope/bz-9000/) (Keyence) was used.