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Rabbit synovial histology Krenn Grading Standard.
| Groups | B | S | M1 | M2 | EA1 | EA2 |
| Indices | 0.50 ± 0.19 | 0.75 ± 0.16 | 3.75 ± 0.41* | 6.63 ± 0.32* | 2.50 ± 0.26*# | 3.87 ± 0.39*# |
*Indicates that there is statistically significant difference with the blank group, P < 0.05. #Indicates that the difference between Group M1 compared with GGroup EA1 is statistically significant,and the difference between Group M2 and Group EA2 is statistically significant, P < 0.05.
