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Trypsin is an enzyme that is involved in the digestion of proteins in the small intestine. It is secreted by the pancreas as trypsinogen which is a non-activated enzyme (pro-enzyme). It becomes activated to trypsin once it is in the small intestine and then becomes involved in the digestion of proteins.
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Toxoplasmosis is a disease caused by infection with the organism called Toxoplasma gondii (T. gondii), a microscopic single-cell organism which is one of the most common parasites of animals.
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Tumours of the blood cells made in the marrow are rare. There is a continuum from dysplasias (abnormal growths) to cancers (myeloproliferative disease).
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This is a tumour of the lymphatic vessels of the skin or subcutaneous tissue. Some lymphatic tumours are benign (lymphangioma) and some malignant (lymphangiosarcoma).
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Tumours that occur on the haired eyelids are similar to those arising elsewhere in the skin. They include cysts, overgrowths (hyperplasias), benign (non-spreading) and occasionally malignant (spreading) cancers.
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Cancers of the pancreas are of two main types, those arising from the part which produces enzymes to aid digestion (exocrine) and those arising from the groups of cells that produce hormones such as insulin (endocrine).
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Tumours of the spleen are common in older dogs, but rare in cats.
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Most swellings and tumours of the uterus are not cancerous. The commonest in the female dog is cystic endometrial hyperplasia (overgrowth of the inner lining of the uterus) due to hormone stimulation.
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'Cat flu' is a common disease in cats of all ages despite widespread vaccination, but tends to be particularly severe in young and old cats.
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Kidney tumours are rare in dogs and cats. When they do occur, they are almost invariably malignant (invasive and spreading) and called renal carcinoma.
