00326nam a2200121Ia 4500008004100000022001400041040001100055100002000066245002400086260006600110300001800176300001000194251112s9999||||xx |||||||||||||| ||und||  a0022-538x  aCNCLSA  aThomas E. Shenk 0aJournal of Virology  cDecember, 1999bAmerican Society for MicrobiologyaWashington  aP. 9695-10557  bV. 73