1. Center for Fungal Cell Wall Research, Swammerdam Institute for Life Sciences, BioCentrum, University of Amsterdam, Kruislaan 318, 1098 SM Amsterdam, The Netherlands1
2. Departamento de Microbiologı́a II, Facultad Farmacia, UCM, Avda. Ramón y Cajal s/n 28040-Madrid, Spain2
3. Department of Microbiology and Preservation, Unilever Research Laboratory, Olivier van Noortlaan 120, 3133 AT Vlaardingen, The Netherlands3