Pneumocystis Carinii from Human Lungs Under Electron Microscope

Pneumocystis carinii Pneumonia Associated With Neuroblastoma

“…Some of the cysts contain a pair of structures approximately 1µ long, which resemble opposed commas, or parenthe¬ ses.18 Electron microscopic studies of the organism have revealed clusters of double-walled spherical structures in which round or irregular bodies are pres¬ ent and which often are connected by a thin membrane. 19 Other pathologic changes associated with this infection include hyaline mem¬ branes, prominent septal cells, and in¬ filtration of the alveolar septa by lympho¬ cytes and plasma cells. Interstitial fibrosis is almost entirely lacking.…”

Pneumocystis carinii Pneumonia Associated With Neuroblastoma

“…Some of the cysts contain a pair of structures approximately 1µ long, which resemble opposed commas, or parenthe¬ ses.18 Electron microscopic studies of the organism have revealed clusters of double-walled spherical structures in which round or irregular bodies are pres¬ ent and which often are connected by a thin membrane. 19 Other pathologic changes associated with this infection include hyaline mem¬ branes, prominent septal cells, and in¬ filtration of the alveolar septa by lympho¬ cytes and plasma cells. Interstitial fibrosis is almost entirely lacking.…”

Opportunistic Infections

“…The electron microscopic structure of the pneumocysts was investigated by Wessel & Ricken (1958) and Bommer (1962). Each cyst consists of a thick transparent outer cyst wall surrounding a membranous structure that inpouches to enclose chromatin particles between the membrane and the inner surface of the cyst wall.…”

Pneumocystis carinii Pneumonia Associated With Neuroblastoma

“…Some of the cysts contain a pair of structures approximately 1µ long, which resemble opposed commas, or parenthe¬ ses.18 Electron microscopic studies of the organism have revealed clusters of double-walled spherical structures in which round or irregular bodies are pres¬ ent and which often are connected by a thin membrane. 19 Other pathologic changes associated with this infection include hyaline mem¬ branes, prominent septal cells, and in¬ filtration of the alveolar septa by lympho¬ cytes and plasma cells. Interstitial fibrosis is almost entirely lacking.…”

Opportunistic Infections

“…The electron microscopic structure of the pneumocysts was investigated by Wessel & Ricken (1958) and Bommer (1962). Each cyst consists of a thick transparent outer cyst wall surrounding a membranous structure that inpouches to enclose chromatin particles between the membrane and the inner surface of the cyst wall.…”

Pneumocystis carinii Pneumonia Associated With Neuroblastoma

“…Some of the cysts contain a pair of structures approximately 1µ long, which resemble opposed commas, or parenthe¬ ses.18 Electron microscopic studies of the organism have revealed clusters of double-walled spherical structures in which round or irregular bodies are pres¬ ent and which often are connected by a thin membrane. 19 Other pathologic changes associated with this infection include hyaline mem¬ branes, prominent septal cells, and in¬ filtration of the alveolar septa by lympho¬ cytes and plasma cells. Interstitial fibrosis is almost entirely lacking.…”

Opportunistic Infections

“…The electron microscopic structure of the pneumocysts was investigated by Wessel & Ricken (1958) and Bommer (1962). Each cyst consists of a thick transparent outer cyst wall surrounding a membranous structure that inpouches to enclose chromatin particles between the membrane and the inner surface of the cyst wall.…”