to classify the studied material into fpf phenotypes , fluoride quotient index -- wif has been proposed which expresses the relationship between the percentage of the inhibition caused by naf at a concentration 5 x 10 ( -3 ) mol/l and that of the inhibition caused by naf at a concentration of 5 x 10 ( -4 ) mol/l in the reaction mixture and in the measurement conditions described in the methods .
C0016327
fluoride
C0037508
naf