MODULE 4: HEMATOPOIESIS (Part 7: CHARACTERISTICS OF LYMPHOCYTES)

15-20 mm

Lymphoblast (Size)

4:1

Lymphoblast (N:C ratio)

Round or oval

Lymphoblast (Nucleus: Nuclear shape)

1 or 2

Lymphoblast (Nucleus: Nucleoli)

Delicate

Lymphoblast (Nucleus: Chromatin)

None

Lymphoblast (Cytoplasm Granules)

Small

Lymphoblast (Cytoplasm: Amount)

Medium blue, may have a darker blue border

Lymphoblast (Cytoplasm: Color)

15-18 µm

Prolymphocyte (Size)

4:1 to 3:1

Prolymphocyte (Nucleus: N:C ratio)

Oval, slightly indented

Prolymphocyte (Nucleus: Nuclear shape)

0 or 1

Prolymphocyte (Nucleus: Nucleoli)

Slightly condensed

Prolymphocyte (Nucleus: Chromatin)

May have a few azurophilic granules

Prolymphocyte (Cytoplasm: Granules)

Small

Prolymphocyte (Cytoplasm: Amount)

Medium blue with a thin rim of darker blue

Prolymphocyte (Cytoplasm: Color)

Small, 4:1 to 3:1

Large, 2:1

Mature Lymphocyte (Size)

Small, 4:1 to 3:1

Large, 2:1

Mature Lymphocyte (N:C ratio)

Round or oval; may have clefts

Mature Lymphocyte (Nucleus: Nuclear shape)

Absent

Mature Lymphocyte (Nucleus: Nucleoli)

Dense and clumped

Mature Lymphocyte (Nucleus: Chromatin)

Few azurophilic granules may be present

Mature Lymphocyte (Cytoplasm: Granules)

Very scanty

Mature Lymphocyte (Cytoplasm: Amount)

Light blue

Mature Lymphocyte (Cytoplasm:Color)