Eric Walker added | Kansas State University | News and Communications Services to Mannheimia haemolytica, and added Mannheimia haemolytica to Mannheimia

Eric Walker added Mannheimia haemolytica to Mannheimia, and added Mannheimia to Gram-negative bacteria

Eric Walker added a number of topics and a number of links to Gram-negative bacteria, and added Gram-negative bacteria to Bacteria and Gram staining