title: Activation of the complement system during infections due to gram-negative bacteria.
mesh_terms: D003176:Complement C3 / Q000378:metabolism; D003181:Complement C4 / Q000378:metabolism; D003165:Complement System Proteins / Q000032:analysis / Q000378:metabolism*; D004927:Escherichia coli Infections / Q000276:immunology*; D006801:Humans; D007710:Klebsiella Infections / Q000276:immunology*; D011512:Proteus Infections / Q000276:immunology*; D011552:Pseudomonas Infections / Q000276:immunology*; D018805:Sepsis / Q000276:immunology
chemical_list: D003176:Complement C3; D003181:Complement C4; D003165:Complement System Proteins