Category: H
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Hyperammonemia, hyperammonaemia
A metabolic disturbance characterized by an excess of ammonia in the blood. An excess concentration of ammonia in the blood.
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Hydrophobia
A viral neuroinvasive disease that causes acute encephalitis (inflammation of the brain) in warm-blooded animals. Also called rabies. Repelling water molecules, as do molecules with few or no polar covalent bonds. A disease spread through the bite of an infected dog or another rabies-carrying mammal. Its name is derived from the afflicted animal’s seeming aversion…
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Hydronephrosis
Is distension and dilation of the renal pelvis and calyces, usually caused by obstruction of the free flow of urine from the kidney. Swelling of the renal pelvis of the kidney with urine due to obstructed outflow. Accumulation of urine in the renal pelvis caused by obstruction, forming a cyst. Swelling of the pelvis of…
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Hydrogogue
A purgative that causes an abundant watery discharge from the bowel.
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Hydrocholeretic
An agent that stimulates an increased output of bile of low specific gravity. Any agent that increases the output of bile without increasing the solids secreted in it.
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Hydatidiform
A rare mass or growth that forms inside the uterus at the beginning of a pregnancy.
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Hyaluronidase
Enzymes that catalyse the hydrolysis of certain complex carbohydrates like hyaluronic acid and chondroitin sulfates. An enzyme that helps sperm to penetrate ova. An enzyme which destroys hyaluronic acid. Enzyme with the power of hydrolysing the cell cement substance, hyaluronic acid. Hyaluronidase production by bacteria such as staphylococci, streptococci and pneumococci renders the tissues more…
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HUVEC
Human umbilical vien endothelial cells.
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Humoral immune response (HIR)
Is the aspect of immunity that is mediated by secreted antibodies (as opposed to cell-mediated immunity, which involves T lymphocytes) produced in the cells of the B lymphocyte lineage (B cell).
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Human factor X
A coagulation factor also known by the eponym Stuart-Prower factor or as thrombokinase, is an enzyme involved in blood coagulation. It synthesized in the liver and requires vitamin K for its synthesis.