FIG. 7.

Cardiomyocytes cultured in 3D gelatin scaffold (for 2, 4, and 8 days) and stained with anti-α-actinin, anti-mouse IgG (whole molecule)-FITC, and DAPI. The left column was the 2nd day culture, the middle column was the 4th day culture, and the right column was the 8th day culture. In the upper column, the green region indicates the position of α-actinin. In the lower column, which contains the merged images, the green region indicates the position of α-actinin, and the blue region represents the position of the nucleus; the bubble structure can be seen in the figure. Color images available online at www.liebertpub.com/tea