Transcription of Family of Enterobacteriaceae - Dallas County …
1 Family of EnterobacteriaceaeLactosePhenylalaninede aminaseHydrogen sulfideHydrogen sulfideindolecitrateSerratia-+-++-Proteu sEdwardsiellaProvidenciaMorganella+-Citr obacter+-+-lysineEscherichia-++-Citrobac terKlebsiellaHafniaEnterobacterKlebsiell aThese are key tests for identification, but NOT the onlydifferences among the organisms. These test reactionsrepresent the predominant reaction. Be mindful that anorganism may not run true to its reaction, or that a specieswithin a genus may be different. BE SURE THAT YOU AREACCURATELY PERFORMING AND INTERPRETING THETEST. You will have to identify what additional tests to run todifferentiate among species within a genera are VERY closely related and you willhave to use a variety oftests to differentiate amongthe species---gelatin, lysinedecarboxylase, VP, motility,urea, malonate, DNAse---toname a sulfide+-This flow chart is just 1 way to get to a genus.
2 Anorganism can vary from its expected biochemical definitive ID book is Bergey s Manual. Use as manytests as possible to support your identificatio
