Different Stages of a Tick Lifecycle. (IMAGE) Society for Industrial and Applied Mathematics Caption This shows the different stages of a tick lifecycle. Image credit: Centers for Disease Control Prevention Public Health Image Library (PHIL). Please link to: http://phil.cdc.gov/phil/sessionexpired.asp Credit Image credit: Centers for Disease Control Prevention Public Health Image Library (PHIL). Please link to: <a target="_blank" href="http://phil.cdc.gov/phil/sessionexpired.asp">http://phil.cdc.gov/phil/sessionexpired.asp</a> Usage Restrictions Please credit CDC and link to PHIL link: http://phil.cdc.gov/phil/sessionexpired.asp 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.