In previous studies, Bergeron and Goulet and Bergeron and Jodoin examined the effects of plant secondary products on the body weight and on the weight of different organs in laboratory mice; we made a histopathological study of the liver of the same animals. Within experimental groups kept on commercial feed and on shredded plants for 6 days, mice fed on ground ivy (Glecoma hederacea), strigose fleabane (Erigeron strigosus), lesser starwort (Stellaria graminea), hop-clover (Trifolium agrarium), and common rush (Juncus effusus) suffered centro- and peri-lobular necrosis. Apart from these extreme cases, other ailments were identified: hemorrhages, pycnosis, mononucleated cell infiltrations, congestion, and vacuole formation.[Translated by the Journal]