Almaguer, Cynthia, Frithjof Thiele, Christina Schönberger, and Elke Arendt. “Ultrastructure Studies of the Lupulin Glands of Different Hop (Humulus Lupulus L.) Varieties Observed by Scanning Electron Microscope”. BrewingScience 68, no. 11/12 (December 21, 2015): 153–160. Accessed June 25, 2026. https://brewingscience.de/index.php/brewingscience/article/view/325.