Observation:Prid:Pt:Respiratory system specimen.lower:Nom:Methenamine silver nitrate stain
observation:prid:pt:respiratory system specimen.lower:nom:methenamine silver nitrate stain
Observation:Prid:Pt:Respiratory system specimen.lower:Nom:Methenamine silver nitrate stain
observation:prid:pt:respiratory system specimen.lower:nom:methenamine silver nitrate stain