Blood - basic principle

Whole blood Thrombocyte - platelet Leukocyte - White blood cell Erythocyte - Red blood cell

RBC and platelets Thrombocyte (platelet) Erythrocyte (RBC)

Neutrophil Lilac granules Multi-lobed nucleus

Eosinophil Bilobed nucleus Orange-red granules

Basophil Blue-black granules S-shaped nucleus

Lymphocyte Smaller cell with very little cytoplasm Dented nucleus

Monocyte Large cell, cytoplasm with vacuoles Large horse-shoe shaped nucleus