00269nam a2200097Ia 4500008004100000082001600041245004300057260002700100650001900127700002500146220204s9999    xx            000 0 und d  a577.27bZAC 0aImmune response at the cellular level.  aNew YorkbDekkerc1973  aImmunoglobulin  aZACHARIA, Theodore P