Page 101 - Clinical Hematology Atlas

CHAPTER 9 LYMPHOCYTE MATURATION 85

LYMPHOBLAST

Nucleus

Nucleoli

Cytoplasm
B
FIGURE 9–2B Schematic of lymphoblast.
A
FIGURE 9–2A Lymphoblast.

SIZE: 10-20 mm
NUCLEUS: Round to oval
Nucleoli: $1
Chromatin: Fine, evenly stained
CYTOPLASM: Scant; slightly to moderately
basophilic
Granules: None
N/C RATIO: 7:1 to 4:1
REFERENCE INTERVAL:
Bone Marrow: Not defined
Peripheral Blood: 0%

C
FIGURE 9–2C Electron micrograph of lymphoblast
(328,750). Lymphoblasts are difficult to distinguish
morphologically in normal bone marrow.