MPO and neonatal abstinence syndrome: Despite similar caloric intake and body weight (Table 1), NAS and herein especially signs of hepatic inflammation such as the number of neutrophil granulocytes, MPO activity, and Ly6G-positive cells were significantly lower in livers of FrFC-fed mice treated concomitantly with phosphatidylcholine when compared with FrFC-fed mice (P < .05 for all parameters) (Table 1 and Figure 1C, D, and F).