Parainfluenza virus 2 Ab^1st specimen:Titr:Pt:Ser:SemiQn
parainfluenza virus 2 ab^1st specimen:titr:pt:ser:semiqn
Parainfluenza virus 2 Ab [Titer] in Serum --1st specimen
parainfluenza virus 2 ab [titer] in serum --1st specimen