Parainfluenza virus 4 Ag:PrThr:Pt:Isolate:Ord:IF
parainfluenza virus 4 ag:prthr:pt:isolate:ord:if
Parainfluenza virus 4 Antigen:Presence or Threshold:To identify measures at a point in time:Isolate:Ordinal:Immune Fluorescence
parainfluenza virus 4 antigen:presence or threshold:to identify measures at a point in time:isolate:ordinal:immune fluorescence