William begins teaching at a university, and is invited to dinner at the home of the Viscount of Belfor. He and his brothers receive a tour of the viscount's well-kept conservatory, but are taken aback by what they hear of the gardener and his wife.
The furanocoumarin that grapefruits contain
الفورانوكومارين التي يحتويها الليمون الهنديّ
Die in der Grapefruit
enthaltenen Furocumarine
La furanocumarina
que contienen los pomelos
Les furocoumarines du pamplemousse
A furanocumarina da toranja
Фуранокумарины в составе грейпфрута