RTN4 and Behcet disease: In addition, western blotting results showed that compared to their levels in the model group, the expression levels of synaptic‐plasticity‐related proteins Nogo‐A, NgR, RhoA, CRMP2, and AGG in the peri‐infarct brain tissue were significantly reduced following treatment with BD and BD+ antagonist (p < 0.01; Figure 7).