Chapter 20: The Gram-Negative Bacilli of Medical Importance Here are links to related web sites you can visit: CDC Travel Information Food and Water Precautions and Travelers' Diarrhea Bug Bytes Weekly information concerning the diagnosis, therapy, or biology of an infectious disease. Cells Alive! Gram stain A teaching page on the gram stain where you can view gram-stained images of bacteria that are medically important. Bugs in the News Return to Chapter 20 activities l Online Learning Center |