Cryptosporidium Oocysts (image) FECYT - Spanish Foundation for Science and Technology Share Print E-Mail Caption Cryptosporidium oocysts dyed using an immunofluorescence technique. In this case, they were purified from animal faeces, not from water samples, where we can logically expect to detect barely any. Credit J. Quílez Cinca/Unizar Usage Restrictions None Share Print E-Mail 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.