Fig. (2) Top view of cartilage-carrier-constructs (1) alginate gel: w/o GF, cartilage formation: IGF-I; (2) alginate gel: w/o GF, cartilage formation: w/o GF; (3) alginate gel: IGF-I, cartilage formation: IGF-I; (4) alginate gel: IGF-I, cartilage formation: w/o GF; (5) alginate gel: IGF-I&TGF-β1, cartilage formation: IGF-I; (6) alginate gel: IGF-I&TGF-β1, cartilage formation: w/o GF; (scale bar= 1 mm).