Metabolomics approach of Symphyotrichum squamatum ethanol extract and its nano-Ag formulation protective effect on gastric ulcer via bio-chemical and pathological analyses

Hassan, Heba A; Ragab, Tamer IM; Afifi, Sherif M; El-Gendy, Abd El-Nasser G; Farrag, Abdel Razik H; Abd-ELGawad, Ahmed M; Elshamy, Abdelsamed; Ammar, Naglaa M; Ayoub, Iriny; Farag, Mohamed;