Fig. 1From: The enhancement of cartilage regeneration by use of a chitosan-based scaffold in a 3D model of microfracture in vitro: a pilot evaluationMicrofracture 3D – model used in our experimental setup in vitro: EZ Derm® – porcine epidermis. Minced cartilage. Fibrin matrix – in some groups it has been replaced with chitosan-based matrix. PET membrane with 4 µm pores and perforated with BD Microlance® 21 g × 1"—0,8 × 25 mm needle. Bone chips at the bottom of plastic wellBack to article page