00301nam a2200109Ia 4500008004100000022001400041040001100055245002600066260007400092300001500166300001000181251112s9999||||xx |||||||||||||| ||und||  a0022-1767  aCNCLSA 0aJournal Of Immunology  cFebruary 15, 1992bThe American Association Of ImmunologistsaU. S. A  aP.983-1970  bV.148