40. A Staphylococcus species recovered from a wound (celluli…

40. A Staphylococcus species recovered from a wound (cellulitis) was negative for the slide coagulase test (clumping factor) and negative for novobiocin resistance.  The next test(s) needed for identification is (are): tube coagulase test beta-hemolysis on blood agar mannitol-salt agar plate all listed answers 

Twenty patients on a surgical ward develop urinary tract inf…

Twenty patients on a surgical ward develop urinary tract infections after catheterization.  In each instance, the isolated organism grows sheep blood agar as a large, gray colony, and on MacConkey agar as a large, flat, pink colony.  The oxidase-negative, gram-negative rod produces the same biotype and is resistant only to tetracycline.  Additional biochemical results are as follows:               Phenylalanine deaminase (PAD): negative             Urease: negative             Hydrogen sulfide (H2S): negative             Lysine decarboxylase: positive             Ornithine decarboxylase: positive             Indole: positive             Citrate: negative