1Laboratoire da Physiologie Respiratoire, UFR Cochin Port-Royal, 24 rue du Faubourg Saint-Jacques, 75014 Paris, France
2Department of Chemistry and Biochemistry, RAU, Johannesburg, 2006 Repiblic of South Africa
3University of Connecticut, Department of Molecular and Cell Biology, Storrs CT 06269-3044, USA
4Division of immunogenetics, Georg August Universität Göttingen, 37073 Göttingen, Germany
5Laboratoire da Physiologie Respiratoire, UFR Cochin Port-Royal, 24 rue du Faubourg Saint-Jacques, 75014 Paris, France