The spectrum of activity of Wa96603-KT and Wa1F1-KT, however, appeared to be different, as the latter proved to be active against the C. glabrata isolates but did not affect the majority of C. albicans strains tested in this study, while Wa96603-KT was previously shown to kill different clinical C. albicans isolates . Selective killing of non-albicans species by W. anomalus KTs with β-glucanase activity has previously been reported . This differential spectrum may be explained with differences in the specificity of β-glucanase activity of KTs, which may selectively recognize different glycosidic linkages and glucan receptors on target yeast cells .