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(Color online) STL-SWEI of cell-embedded collagen hydrogels. (A) Shown are representative B-scan and overlaid shear modulus images of a cell-embedded hydrogel obtained at an imaging plane at 8 mm from the gel center. (B) High-frequency (38 MHz) B-scan image and overlaid parametric image of the IBC at the same imaging plane shown in (A). Images are representative of three separate samples. Scale bar, 4 mm.
