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The hyaline globules in the amorphous material do not show any organisms with GMS stain (a, b). Compare this with appearance of PCP in positive control (c, d), which shows frothy casts with the characteristic crushed ping-pong ball like organisms (c) with small central to eccentric dots (arrow in d). (Bronchoalveolar lavage; Gomori-Silver Methanamine (GMS) stained SurePath Prep™).
