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(A) Live staining of chondrocytes-on-chip directly after loading (left) and after 28 of cultivation (right), confirming high viabilities throughout the cultivation time. (B) CMFDA-stained chondrocytes in the cultivation chamber exhibiting spherical morphology. (B) Histological staining of chondrocyte-on-chip cultures with H&E (left), Safranin O (middle), and Ki67 (right). CMFDA, 5-chloromethylfluorescein diacetate .
