EDWARD KINSMAN / SCIENCE PHOTO LIBRARY EDWARD KINSMAN / SCIENCE PHOTO LIBRARY
Figwort stem (Scrophularia nodosa). Light micrograph of a section through a figwort stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots. Figwort was used in herbal medicine as a treatment for skin eruptions. The magnification is 32 times when printed 10 inches wide.
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