Case 49. 

Papanicolaou-stained preparation reveals light green-stained trophozoites. In the background, necrotic debris and nuclear dusts are observed.
　 　 　 　
　
Needle aspirate from liver abscess in AIDS
 　
　 　 　 　

　

 　 Oil immersion observation discloses a centrally located nucleus with peripheral chromatin condensation and the double-layered cytoplasm (thick-stained inner "endoplasm" vs. light-stained outer "ectoplasm") (Papanicolaou).