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

Eric Walker added Achromobacter xylosoxidans to Achromobacter, and added Achromobacter to Gram-negative bacteria

Eric Walker added Evaluating the Role of New Beta-Lactam Agents for Uncommon Pathogens to Achromobacter xylosoxidans, and added Achromobacter xylosoxidans to Achromobacter