Figure 1

Morphology of CHH-1 cells. Wright’s stains of (A) primary leukemia cells in bone marrow of the patient and (B) CHH-1 cells. The cells have a blastic appearance with immature nuclei, prominent nucleoli and gray blue cytoplasm with vacuoles, similar to the original leukemia cells. (C) Cytochemical staining of CHH-1 cells. (D) Ultrastructural appearance of a CHH-1 cell illustrating a deep-folded nucleus with well-defined nucleolus and cytoplasm containing few organelles except a number of mitochondria and rough endoplasmic reticulum. (E) Scanning electron microscopy of CHH-1 cells showing abundant microvili. Original magnification ×1000, scale bar 50 μm (A,B,C).