SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
Foxglove. Historical illustration of the flowers of the foxglove plant (Digitalis purpurea). The leaves of this medicinal plant contain the toxin digitalin, which is a heart muscle stimulant. When consumed in large quantities they are extremely poisonous, causing disorganised pumping of the heart. However, in small quantities digitalin is used as a drug to treat heart failure, for example in cases of myocardial infarction (heart attack). From Mathematische und Naturwissenschaften by Johann Geog Heck, 1860.
Model release not required. Property release not required.