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College of Life Sciences Cell Biology and Physiology
CELL 325: Tissue Biology
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Erthrocyte, Lymphocyte, Monocyte, Megakaryocyte

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RBC 20x.jpg
RBC 20x
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RBC 40X
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Lymphocyte 40X
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Lymphocyte 100X
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Lymphocyte 100X_2
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Monocyte
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9-56 Monocyte
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Monocyte 100X
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Megakaryocyte 20X
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Megakaryocyte 40X
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Platelet 100X
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RBC 20x
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RBC 40X
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Lymphocyte 40X
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Lymphocyte 100X
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Lymphocyte 100X_2
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Monocyte
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9-56 Monocyte
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Monocyte 100X
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Megakaryocyte 20X
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Megakaryocyte 40X
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Platelet 100X
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Erythrocyte

  • A: Red blood cells usually stain red and are biconcave so the center often stains slightly lighter. Histologically they are named erythrocytes.

    B: Platelet
  • A: Erythrocytes

    B: Patelets

Lymphocyte

  • A: Lymphocyte

    B: Erythrocyte

    C: Neutrophil
  • A: Lymphocyte has a very dark densely stained nucleus and a visible cytoplasm.
  • - 20-50% of WBCs

    - Life span is months to years

    - General immunity

Monocyte

  • A: Monocytes are usually shaped like a kidney bean due to their large bi-lobular nucleus. The nucleus also stains much less dense than a lymphocyte

    - 2-10% of WBCs

    - 2-5 day lifespan in circulation and 1-3 months in tissue

    - Function as phagocytes

    B: Lymphocyte with a markedly more dense staining nucleus

    C: Basophil with obvious large purple granules obscuring the cytoplasm

Megakaryocyte

  • A: Megakaryocytes are large cells that give rise to platelets or thrombocytes through a process called thromobopoiesis. The cytoplasm of this large megakaryocyte pinches off small portions of its cytoplasm to form the platelets.
  • A: Megakaryocyte is much larger than any of the other WBCs located in this bone marrow sample

    B: Immature agranulocyte

    C: Immature granulocyte
  • A: Platelets or histologically named thrombocytes are anucleate pieces of megakaryocyte cytoplasm. They form plugs, promote clot formation, and secrete factors that modulate coagulation

Blood

Erthrocyte, Lymphocyte, Monocyte, Megakaryocyte
Neutrophil, Eosinophil, Basophil
Blood and Lymph Quiz