dmakdmaw

• RBC

  • size: 6-8 ɥm
  • Biconcave disc
  • Non-nucleated
  • lifespan: 30-120
• Neutrophil

  • most abundant
  • cell size: 10-15
  • cytoplasm: fine lilac pink, diffusely distributed
  • nucleus: coarse and clumped chromatin
  • relative count: 50 - 70%
  • absolute count: 1800-7800/ɥL or 1.8- 7.8x109 /L
  • It has an active role in phagocytosis (cell-eating) of bacteria and other small bacteria.
  • It is the primary WBC to arrive in an infested site
• Eosinophil

  • Cell size: 10-15
  • cytoplasm: reddish - orange large granules, granules do not lie in the nucleus
  • nucleus: segmented two lobes
  • relative count: 2 - 4%
  • absolute count: 350 - 600/ɥL or 0.5- 0.60x109 /L.
• Staff cell (stab or band cell)

  • cell size: 10-15 ɥm
  • Cytoplasmic characteristics: almost similar to neutrophils with fine lilac granules; has distinct indentation not more than ½ of total cell width of cell’s indent point.
  • Nucleus: curved, elongated as almost similar to “sausage” shape.
  • relative count is 2-6%
  • absolute count is 350-700/ɥL or 0.3- 0.70x109 /L
• Atypical lymphocytes:

  • The cell size is 6-10 ɥm
  • Cytoplasmic characteristics: appears sky-blue; has small amounts of darkest blue cytoplasm; without granules.
  • Nuclear characteristics: nucleus is compact, large and round.
  • The normal value of its relative count is 25-40%,
  • absolute count is 1000-4800/ɥL or 1.0- 4.8x109 /L.
• Big lymphocytes:

  • Cell size is 12-15 ɥm
  • Cytoplasmic characteristics: appears sky-blue with abundance of cytoplasm.
  • Nuclear characteristics: immature-looking with fine chromatin.
  • The normal value of its relative count is 25-40%, whereas its
  • absolute count is 1000-4800/ɥL or 1.0- 4.8x109 /L.
• Monocytes


  Cell size is 14-20 ɥm
• Monocytes


  • Cytoplasmic characteristics: appears as blue-grey cytoplasm
  • Nuclear characteristics: smaller nucleus, appears partially lobulated, deeply indented and appears as a horse-shoe or coffee bean shaped; chromatins are in fine parallel strands
• The normal value of monocytes' relative count is 2-8%, whereas its absolute count is 300-800/ɥL or 0.3- 0.80 x109 /L
• Monocytes


  Precursor of macrophages and cells in connective tissues like osteoclast and microglia
• Monocyte-derived cells


  Serve as antigen presenting cells which is an important role in immune response
• Thrombocytes

  • irregular fragments of cells formed in the bone marrow from a much larger cell.
  • It is non-nucleated
  • The lightest element of blood
  • 2-4 ɥm in diameter
  • Difficult to count as it adheres easily on surface and it easily disintegrates.
  • The normal value is 150,000-400,000/mm3
  • It maintains the integrity of blood vessels.
  • It forms the hemostatic plugs to stop blood loss from injured vessels.
  • Thrombocytes releases serotonin.