Fig. 8
From: Potential use of 3D-printed graphene oxide scaffold for construction of the cartilage layer
a Analysis of immunofluorescence staining with aggrecan and collagen I showing that the cartilage with 3D-printed scaffold only was thinner than that with micro-GO scaffold after 6 week (bar = 200 μm). b Significant differences of immunohistochemical collagen I in treatment with micro-GO scaffold from weeks 2 to 6 (bar = 200 μm, 100 μm, respectively). c Process of renewed collagen I summarized as follows by the above results: the collagen I bud appeared in week 2, collagen I was twined in week 4, and was net together in week 6. Meanwhile, the scaffold in the matrix collapsed step by step