Fig. 4From: A lithium-containing biomaterial promotes chondrogenic differentiation of induced pluripotent stem cells with reducing hypertrophyEffects of L2C4S4 extracts on maintaining chondrocyte spheres. a Chondrogenic induction strategy. b The morphology of chondrocyte spheres in different groups, n = 3. c The volume of chondrocyte spheres in different groups, n = 3, data presented as mean ± SEM. Scale bar = 200 μm. CTR: MCDM without any extractsBack to article page