<s>[INST] Given an abstract text, please determine whether it contains any drug mentions. Provide a 'Yes' or 'No' answer based on the presence or absence of drugs. Abstract Text: Melatonin Therapy Reduces Biliary Senescence, Liver Inflammation And Fibrosis In A Murine Model Of Primary Biliary Cholangitis (Pbc).[/INST] Yes</s>