Which test differentiates Cedeccea from Serratia species?

The differentiation of Cedeccea from Serratia species is primarily based on the DNase test. Cedeccea species are known to be negative for DNase production, meaning they do not produce the enzyme that breaks down DNA, whereas Serratia species typically produce DNase, resulting in a positive test. This biochemical characteristic makes the DNase test a reliable method for distinguishing between these two genera.

In the context of microbiological identification, understanding the enzymatic capabilities of different bacteria can be crucial. The presence or absence of certain enzymes can aid in forming a clearer picture of the species in question. This is particularly important in clinical microbiology for identifying pathogens and determining appropriate treatments.