Comparison of the colonization intensities (polyurethane central venous catheters) of C. albicans strains with the following genotypes: isogenic wild-type (CAI4), efg1/efg1 (HLC67) and cph1/cph1 (JKC18) single mutants, efg1/efg1 cph1/cph1 double mutant (HLC69), and efg1/efg1 cph1/cph1 with the wild-type EFG1 gene (HLC84). Counts were analyzed by nonparametric Kruskal-Wallis one-way analysis of variance on ranks by using Dunn's pairwise multiple-comparison technique (Sigmastat statistical software, version 2.0; SPSS Science, Chicago, Ill.).