00329nam a2200097Ia 4500008004100000040001100041245009300052260006300145300001300208300001000221251112s9999||||xx |||||||||||||| ||und||  aCNCLSA 4aThe Journal of ImmunologybOfficial Journal of the American Association of Immunologists  cAugust, 1999bThe National Academy of SciencesaWashington  aP. 1-558  bV. 86