a family of bacteria belonging to the order Eubacteriales. Gram-negative rods; aerobes; carbohydrate fermenters; many saprophytic. Includes some gut parasites of animals and some blights and soft rots, suur gramnegatiivsete kepp-pisikute sugukond (nt. Esterichia, Klebsiella, Enterobacter, Proteus, Salmonella, Shigella, Yersinia), mille liigid elavad inimeste ja loomade soolestikus, heitvetes, pinnas