The string test, which is also called the Entero-test, is a test used to find parasites in the upper part of your gastrointestinal tract. To perform the test, you swallow a string. When the string is ...

She’s only 17, but Jessica Chrzan is at the forefront of an effort to do a better job of monitoring a disease that makes her nauseated. Chrzan participated in a University of Illinois at Chicago ...