Yersinia Infecting Macrophages (image) University of Washington Share Print E-Mail Caption Yersinia (gray) infects two macrophages. In the upper right pyroptosis was subverted via YopM, in the bottom left, pyroptosis is induced and an inflammasome is formed (white). Credit Brad Cookson lab 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.