Corresponding author:

J. Banchereau

Schering Plough Laboratory for Immunological Research
27, chemin des Peupliers
BP 11, 69571 Dardilly
France.

Tel #: (33)4.72.17.27.00
Fax #: (33)4.78.35.47.50

E-mail: J Banchereau: LIR@dial.oleane.com
C v Kooten: Kooten@Nephrology.Medfac.LeidenUniv.Nl