White Blood Cells
White Blood Cells Basic Information Definition White blood cells consist of granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes. Occasionally, mast cells can be observed in the tissue and the…
Inflammatory Airway Disease
Inflammatory Airway Disease Basic Information Definition • Inflammatory airway disease (IAD) is a respiratory disease of adult horses that is characterized by noninfectious inflammation of the small airways accompanied by…
Microcytosis
Microcytosis Basic Information Definition Microcytosis refers to the presence in the blood of significant numbers of erythrocytes that are smaller than normal (microcytes), often resulting in a decrease in the…
Sinusitis, Primary
Sinusitis, Primary Basic Information Definition An inflammatory process of the paranasal sinus system caused by bacterial upper respiratory tract infection Epidemiology Species, Age, Sex Primary sinusitis can affect horses of…
Keratocytes
Keratocytes Basic Information Definition Keratocytes are erythrocytes with one or two projections that may form as a result of rupture of a vacuole or hole within an erythrocyte. Their mechanism…
Schistocytes
Schistocytes Basic Information Definition Schistocytes are fragmented erythrocytes. They are irregular in shape and smaller than normal erythrocytes on blood smears. Synonym(s) Schizocytes Red blood cell fragments
Lyme Disease
Lyme Disease Basic Information Definition Infection with a tickborne, gram-negative helical spirochete, Borrelia burgdorferi, which causes disease resulting in equivocal signs of lameness or behavioral changes Synonym(s) Borreliosis Epidemiology •…
Fibrinogen
Fibrinogen Basic Information Definition Fibrinogen is a soluble plasma protein produced by hepatocytes. Typical Normal Range (US units; SI units) Adults: 0.1 to 0.4 g/dL (1.0–4.0 g/L); varies slightly between reference laboratories….
Testosterone
Testosterone Basic Information Definition • Hypertestosteronemia: Increased circulating concentration of testosterone • Hypotestosteronemia: Decreased circulating concentration of testosterone Physiology • Testosterone or 17-beta-hydroxy-4-androstene-3-one is a steroid hormone from the androgen…
