help identify this enterobacteriaceae

Stephen D Lord slord at
Mon Aug 11 11:13:39 EST 1997

In other words... Please do my homework for me.

Gregory D. Rose (gdrose at wrote:
: I am stuck.  Trying to identify my unknown in medical microbiology
: class.  Have it narrowed to maybe.. thats MAYBE two organisms:  E. coli
: and Proteus Vulgaris.  My results have not been overly convincing
: however.  Here goes.

: Medium sized gray colonies with white center, alpha hemolytic on BAP
: It ferments lactose (purple colonies with green sheen on EMB)
: TSI was acid/acid no gas, no H2S produced
: SIM was + + +  (very positive for H2S here but negative on TSI)
: Urease negative
: Pdase negative
: Citrate negative
: Lysine negative
: Ornithine negative
: IMViC - + - -

: Help...  please.

: respond by e-mail if possible to:  gdrose at
: Thank you


If at first you don't succeed, sky diving is not for you

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