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Sol-gel phase transition characteristics and determination of gelation time (A). Representative image of the sol-gel phase transition characteristics of different hydrogel formulations (BD NP HG, MTX NP HG, PEITC NE HG, and DD NP HG ). Phase transition with an increased temperature. (B). The gelation time of the different hydrogel formulations (BD NP HG, MTX NP HG, PEITC NE HG, and DD NP HG) was measured at 25 °C and 37 °C. Data shown in mean ± SD (n = 3).
