Effect of the extract of Hypericum perforatum on digestive organs morphometry in Wistar rats Journal title: Journal of Herbal Drugs Authors: Maryam Modhej; Saleh Tabatabaee Vakili; Mohsein Sari; Somayeh Slari; Esrafil Mansuri Subject(s): Medicine, Agricultural Science, Biotechnology, Botany, Genetics, Plant Sciences, Marketing, Pharmacology, Toxicology