Observation:Prid:Pt:Tiss:Nom:Trichrome stain.Gomori-Wheatley
observation:prid:pt:tiss:nom:trichrome stain.gomori-wheatley
Observation:Prid:Pt:Tiss:Nom:Trichrome stain.Gomori-Wheatley
observation:prid:pt:tiss:nom:trichrome stain.gomori-wheatley