Tropheryma whipplei is characterized by the presence of periodic acid-Schiff (PAS)-staining macrophages,which indicates mucopolysaccharide or glycoprotein,in almost every organ system.Without treatment,this disease is uniformly fatal.Identification is achieved using:

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T.whipplei is the organism that is characterized by the presence of PAS-staining macrophages,which indicates mucopolysaccharide or glycoprotein,in almost every organ system.The bacillus is observed in macrophages and affected tissues,but it has never been cultured.Detection of T.whipplei is limited to only a few laboratories using conventional and real-time PCR.

Tropheryma Whipplei Is Characterized by the Presence of Periodic Acid-Schiff