Schupp E, Michel R, Raether W, Niemeitz H, Uphoff M
Z Parasitenkd. 1978 Jun 30;55(3):189-93. doi: 10.1007/BF00390369.
The in vitro-invasion of mouse erythrocytes by Toxoplasma gondii could be detected and analysed by electron microscopy. The sequence of events observed during erythrocyte invasion led to the assumption of an actively penetrating parasite into the non-phagocytic host cell.