TRIM21 and disseminated candidiasis: The key role of Ssa1 in host cell invasion is illustrated by the reduced capacity of an ssa1Δ/Δ null mutant to induce its own uptake by epithelial and endothelial cells in vitro, and by the significantly attenuated virulence of this mutant in mouse models of oropharyngeal candidiasis and disseminated candidiasis.