Malaria Oocyst (IMAGE) Penn State Caption Oocyst -- non-infectious stage of malaria -- of Plasmodium yoelii (rodent malaria) attach to the wall of a mosquito midgut. Credit Krijn Paaijmans, Universitat de Barcelona Usage Restrictions Non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.