The invention provides a novel calcium-independent cytosolic phospholipase A2B enzyme, polynucleotides encoding such enzyme and methods for screening unknown compounds for anti-inflammatory activity mediated by the arachidonic acid cascade. The method includes receiving a first performance enhancement indicator and determining whether an enhanced read operation is to be performed based on at least information associated with the first performance enhancement indicator. Housing for the kiosk may surround all of the system parts or may be split into a housing shell and a marking unit that fits inside the shell.