Yeast 26 August 2009
Fungi are single cell organisms and are more highly developed than bacteria and viruses. They vary from moulds, mushrooms and tiny round yeast spores, to finger or string-like mycelial forms. Fungus which has long braching filaments (hyphae) are known as mould and those without are called yeast. There are over a million different fungal species, over 400 of which are known to cause human disease.
For more information, see, Candida and fungal infections.