Figure 4. Phase-contrast microscopy of hydrogels, including enzyme-crosslinked hydrogels, on day 7 of culturing. Magnification 100Х. a – hydrogel A(2)G3, b – A(2)mALG_{1(2)G(3), c – A(2)mALG2(2)G(3), d – A(2)G(3)TG, e – A(2)mALG1(2)G(3)TG, f – A(2)mALG2(2)G(3)TG. Hydrogel cells ALG(2)mALG2(2)G(3)TG were contrasted with MTT reagent due to low gel transparency.}