Typhoid Fever (image) University of Basel Share Print E-Mail Caption This shows Salmonella-infected cells (macrophages in blue, monocytes in turquoise). This shows dead Salmonella (only yellow), surviving Salmonella (yellow and red). Credit (Illustration: University of Basel) Usage Restrictions Your are allowed to copy and distribute this image under the restriction of giving adequate credit to the author. 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.