Niemann-Pick cells in Periodic Acid Schiff stain:
Atika Khalid
Round, oval, or polyhedral cells with foamy, lipid-containing cytoplasm, found in the bone marrow and spleen in Niemann-Pick disease. (Dorland's Medical Dictionary)
At 10x objective lens:
At 20x objective lens:

At 40x objective lens:
At 100x objective lens: