Observation:Prid:Pt:Tiss:Nom:Alcian blue stain.with periodic acid-Schiff
observation:prid:pt:tiss:nom:alcian blue stain.with periodic acid-schiff
Observation:Prid:Pt:Tiss:Nom:Alcian blue stain.with periodic acid-Schiff
observation:prid:pt:tiss:nom:alcian blue stain.with periodic acid-schiff