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Therapeutic effect of umbilical cord blood mesenchymal stem cells on advanced OA pain. A: Changes of Von frey abosolute threshold in each group. B: Changes of disability analysis scores in each group. C: Change of load-bearing difference of each group. D: Changes of body weight in each group. *** indicates P<0.001. E: The cartilage tissue of osteoarthritis in each group was stained with HE, and the samples were taken after osteoarthritis modeling and before treatment.
