[1] Division of Immunology,
[2] Department of Pathology,undefined
[3] University of Cambridge,undefined
[4] Tennis Court Road,undefined
[5] Cambridge CB2 1QP,undefined
[6] UK,undefined
[7] E-mail.: drhodes@hgmp.mrc.ac.uk,undefined
[8] Tel.: +44-1223-333-921,undefined
[9] Fax: +44-1223-333-875,undefined