Observation:Prid:Pt:Duod fld:Nom:Trichrome stain
observation:prid:pt:duod fld:nom:trichrome stain
Observation:Presence or Identity:To identify measures at a point in time:Duodenal fluid:Nominal:Trichrome stain
observation:presence or identity:to identify measures at a point in time:duodenal fluid:nominal:trichrome stain