Streptococcus pneumoniae 20 Ab.IgG^2nd specimen/1st specimen
streptococcus pneumoniae 20 ab.igg^2nd specimen/1st specimen
Streptococcus pneumoniae 20 Ab.IgG^2nd specimen/1st specimen
streptococcus pneumoniae 20 ab.igg^2nd specimen/1st specimen