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Four SD rats each were implanted with the scaffolds from the three groups, including the GelMA group, alginate group, and GM-alg group, in vivo
(A) Scaffolds were retrieved with the surrounding tissue at time points of 1-, 2-, 3-, and 4-week after implantation, which were stained with HE.
(B) F4/80 immunofluorescence sections show macrophages.
