Metarubricyte: most mature form of nucleated red blood cell (nRBC). Nuclei are small and pyknotic, often eccentric, with condensed (smooth dark) chromatin. Cytoplasm is smooth and uniform and may stain… Read more Nucleated Red Blood Cells →
Morphology: small red blood cells with mild anisocytosis and little to no central pallor. Lifespan: 150 days Other features: slight poikilocytosis may be normal. Crenation of red blood cells with sharp-pointed margins is… Read more Normal Sheep Erythrocytes →
Morphology: very small red blood cells with mild anisocytosis and little to no central pallor. Goats have the smallest erythrocytes of all domestic species. Lifespan: 125 days Other features: prominent poikilocytosis may be… Read more Normal Goat Erythrocytes →
Morphology: red blood cells often show artifactual crenation (sharp-pointed margins) with little to no central pallor and mild to moderate poikilocytosis. Lifespan: 70 – 98 days Other features: rouleaux is common. Young… Read more Normal Porcine Erythrocytes →
Morphology: llamas, alpacas, and camels have small, flat, oval-shaped red blood cells. Lifespan: 60 days Other features: mild anisocytosis and poikilocytosis may be present in healthy llamas. Mean corpuscular hemoglobin concentration (MCHC) in… Read more Normal Camelid Erythrocytes →
Morphology: relatively small, uniform red blood cells with little to no central pallor. Lifespan: 140 – 150 days Other features: rouleaux may be prominent in healthy horses. Polychromatophils are not observed in blood… Read more Normal Equine Erythrocytes →
Morphology: relatively small red blood cells with mild anisocytosis and a small amount of central pallor. Lifespan: 160 days Other features: basophilic stippling common with regenerative response. Young calves (< 3 months) may show… Read more Normal Bovine Erythrocytes →
Morphology: relatively small red blood cells with some variability in size and shape and little to no central pallor. Lifespan: 65 – 76 days Other features: rouleaux, occasional Howell-Jolly bodies, and… Read more Normal Feline Erythrocytes →
Cells and Smears 