00306nam a2200121Ia 4500008004100000022001400041040001100055100002000066245002400086260004900110300001600159300000900175251112s9999||||xx |||||||||||||| ||und||  a0022-538X  aCNCLSA  aThomas E. Shenk 0aJournal Of Virology  c1999bAmerican Society For MicrobiologyaUSA  aP.6209-7098  bV.73