Figure 9 displays that, by comparing with NG, the serum ALT (Figure 9(c)) grew greatly in MG rats (P < 0.01) without impact on AST (Figure 9(d)). After administration of DO for 6 weeks, the serum AST in DO group significantly decreases compared with MG (P < 0.05) (Figure 9(c)), but no impact on AST (Figure 9(d)) was shown. Here, GPT is linked to myasthenia gravis.