Case 84. Reference case 84A

　 　 　 　
　
Pneumocystis carinii in bronchial lavage from an AIDS patient (Grocott).
 　
　 　 　 　

　

 　 The cyst wall of the microbes is stained by Grocott's silver. The presence of dot-like (parenthesis-like) structure in round or cup-shaped cysts is confirmative and useful for cytological diagnosis.