Observation:Prid:Pt:Plr fld:Nom:Gram stain
observation:prid:pt:plr fld:nom:gram stain
Observation:Presence or Identity:To identify measures at a point in time:Pleural fluid (thoracentesis fld):Nominal:Gram stain
observation:presence or identity:to identify measures at a point in time:pleural fluid (thoracentesis fld):nominal:gram stain