Kaul B, Staba E J
Science. 1965 Dec 24;150(3704):1731-2. doi: 10.1126/science.150.3704.1731.
During an examination of Ammi visnaga Lam. suspension cultures for the biosynthesis of furanochromones and related medicinal compounds, visnagin was isolated in crystalline form and identified. Thus, certain medicinally important secondary plant metabolites may be produced in appreciable amounts by plant tissue cultures.