Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Distribution of ssu rDNA PCR RFLP types derived from tap water. Indicated are the AluI types identified by uppercase letters versus their frequency of occurrence among the 55 clones studied. Note that types B and D, representing Pseudomonas spp., are by far the most prevalent. The relative abundance represents the proportion the number of representatives of a given RFLP type divided by the cumulative number of all clones analyzed. The latter is set at 100%.
