A schematic representation of database PRRDB. This figure gives a detailed architecture of database PRRDB. On the bottom side of the figure, tables of the database and fields of respective table are listed. On the top of the figure are the names of pattern-recognition receptors for which information is present in PRRDB. The left side provides a listing of the various types of PAMPs included in the database and the right side gives various web tools available for searching and browsing the database.