Fig. 3.

(A) The fluorescent images of K7M2wt bone tumor cells stained with calcein AM (green live cells) and PI (red dead cells; magnification × 200); (B) relative viability of bone tumor cells in blank and hybrid hydrogels with different power densities treatment (*P < 0.05, **P < 0.01); and (C) heating curves of the wet hydrogels in plates with cell medium (the inset circle images were the IR pictures of the hydrogel in plates).