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Sarcoma
Cancer originating from fibrous tissues.
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Sarcoptic mange
Skin disease characterized by extreme itching, hair loss, and secondary infection. Usually widespread, but often seen on the belly and inner thighs. Can be treated, but spreads easily.
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Scale
Accumulation of loose fragments of the top layer of the skin.
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Sclera
The white part of the eye beneath the upper eyelid. The sclera normally has small blood vessels running across the surface.
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Sclerosis
A hardening of tissue, usually the result of chronic inflammation.
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Sebaceous Adenitis
Inflammation of a sebaceous (oil-producing) gland. In dogs, sebaceous glands are found on the top of the tail near its base, and at the junction of mucous membranes with skin. In cats, these glands are found on the chin, lip margins, and the top of the ta
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Sebaceous Gland
A gland in the skin which produces an oily substance.
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Seborrhea
Abnormal secretion of the sebaceous glands at the base of hair follicles causing anything from dandruff to greasy scales and crust.
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Seborrhea, Primary
Metabolic seborrhea. Scaling caused by endocrine disorders, aberrations in lipid availability, nutritional imbalances.
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Seborrhea, Secondary
Scaling due to allergies, ectoparasite infestation, mycotic infections, immune-mediated disease.
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Sebum
Formed of diester waxes, cholesterol and free fatty acids in sebaceous glands, which empty into the hair follicle or onto the skin.
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Seizure Threshold
The level of stimulation at which a seizure is produced. Raising the seizure threshold makes it less likely a seizure will occur.
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Seizure
Another term for convulsions.
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Separation Anxiety
A behavioral condition in which the pet becomes anxious when separated from the owner. Dogs with separation anxiety tend to 'shadow' their owners, greet them exuberantly when they return after being gone, and sometimes vocalize, chew destructively, and ur
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Sepsis
The presence of infectious organisms in the blood.
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Septic
A condition caused by an infection e.g., with bacteria or fungi, or toxins they produce.
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Septic Arthritis
A bacterial infection in a joint causing inflammation.
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Septicemia
A disease affecting many organ systems due to toxins in the blood which are released by bacteria or other microorganisms. Signs include fever, pinpoint bruises on mucous membranes, and lesions in the joints, heart valves, eyes, or other organs.
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Serology
Laboratory testing for antibody-antigen reactions and antibody levels.
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Serotype
A subdivision of a species of microorganism, e.g., a bacteria, based upon its particular antigens.
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