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The edge of a correctly prepared blood film from a normal blood sample. Relatively few white blood cells can be seen in this example.
<p>The edge of a correctly prepared blood film from a normal blood sample. Relatively few white blood cells can be seen in this example.</p>
The endothelial cells are part of the vascular wall, which was damaged during venepuncture. (Blood coagulation was activated during the process: on the bottom left a fibrin fibre can be recognised.)
<p>The endothelial cells are part of the vascular wall, which was damaged during venepuncture. (Blood coagulation was activated during the process: on the bottom left a fibrin fibre can be recognised.)</p>
Size: 12-17 µm
Nucleus: usually bilobed with visible filament
Cytoplasm: weekly basophilic containing coarse reddish-orange granulation packing the cytoplasm
Function: Phagocytosis, chemotaxis, mortification of parasites, inhibition of mastcell degranulation, eutralization of histamine
<p>Size: 12-17 µm </p> <p>Nucleus: usually bilobed with visible filament </p> <p>Cytoplasm: weekly basophilic containing coarse reddish-orange granulation packing the cytoplasm </p> <p>Function: Phagocytosis, chemotaxis, mortification of parasites, inhibition of mastcell degranulation, eutralization of histamine</p>
Epithelial cells in a drop of saliva containing streptococci.
<p>Epithelial cells in a drop of saliva containing streptococci.</p>
Pronounced erythrocytosis (polyglobulia) can often already be recognised after sedimentation of the red blood cells. Left tube: haematocrit 82%, right tube: haematocrit 39%.
<p>Pronounced erythrocytosis (polyglobulia) can often already be recognised after sedimentation of the red blood cells. Left tube: haematocrit 82%, right tube: haematocrit 39%.</p>
The bone marrow cytology (May-Grünwald-Giemsa stain) of a patient with ET shows a clear increase in exceptionally large megakaryocytes.
<p>The bone marrow cytology (May-Grünwald-Giemsa stain) of a patient with ET shows a clear increase in exceptionally large megakaryocytes.</p>
Reddish striations caused by extreme haemolysis in a case of septicaemia caused by Clostridium perfringens.
<p>Reddish striations caused by extreme haemolysis in a case of septicaemia caused by Clostridium perfringens.</p>
Extreme thrombocytosis (3,400,000/μL) in chronic myelogenous leukaemia (CML, bcr-abl+); on the right a basophilic granulocyte.
<p>Extreme thrombocytosis (3,400,000/μL) in chronic myelogenous leukaemia (CML, bcr-abl+); on the right a basophilic granulocyte.</p>
In the impedance channel of a haematology analyser a falsely elevated platelet concentration of 850,000/μL was measured. This was caused by precipitated cryoglobulin in cryoglobulinaemia. The flocculated cryoglobulin is visible in the phase contrast microscope in between the red blood cell 'rouleaux'.
<p>In the impedance channel of a haematology analyser a falsely elevated platelet concentration of 850,000/μL was measured. This was caused by precipitated cryoglobulin in cryoglobulinaemia. The flocculated cryoglobulin is visible in the phase contrast microscope in between the red blood cell 'rouleaux'.</p>