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  These images are from the culture of an expectorated sputu…

  These images are from the culture of an expectorated sputum specimen from a 77 year old patient suffering from symptoms of pneumonia (BAP on the left, MAC on the right, growth on CHOC resembles BAP). Further biochemical testing indicates that the pathogen is: Indole = pos                                      oxidase = neg MR = pos                                          lysine = neg VP = neg                                           arginine = neg Citrate = neg                                     ornithine = neg Tryptophan deaminase = pos           urea = pos TSI = A/H2S                                      nitrate = pos ONPG = neg

A patient presents to her physician with complaints of vagin…

A patient presents to her physician with complaints of vaginal itching and the presence of a thin but profuse, malodorous (“fishy smelling”) vaginal discharge. A direct smear of the vaginal discharge on Gram stain reveals many squamous cells covered with a myriad of small Gram negative and Gram positive bacilli, some curved and some straight. There are few neutrophils and only rare long thin Gram positive bacilli present. These findings are consistent with: