top: “In this 2007 image, Center for Disease Control (CDC) microbiologist, and Special Pathogens Branch staff member, was peering out through an air-tight portal from inside the organization’s Biosafety Level 4 (BSL-4) laboratory decontamination shower. The shower leads into the changing room, were laboratorians could disrobe, safely removing their air-tight suits.”
bottom: “Depicted here in this 2007 photograph, was a Centers for Disease Control microbiologist, and Special Pathogens Branch (SPB) staff member in the process of inserting a rack of boxes containing biological stocks into a liquid nitrogen freezer where they would be stored.”














