Tissue engineering (TE) constructs are an attractive alternative therapy for patients with e.g., degenerated cartilage. The positive patient outcome relies on the quality of the TE constructs as they should mimic the native tissue in its molecular, chemical, and physical properties. Most quality assessment techniques of TE constructs are destructive to the sample. Therefore, there is an urgent need for a novel non-destructive method to control the in vitro cultivating process. Here, we present Raman Projection Tomography (RPT) which enables live label-free 3D molecular imaging. RPT was employed for the non-destructive quality control of cartilage TE constructs.
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