Runny nose
The production of extra mucus by the nose. Rhinorrhea is the medical term for this common problem. The nose makes extra mucus whenever something that is in the nose, such as pollen or dust, needs to be removed. Mucus formation is also part of the histamine reaction to allergies and of the body’s defenses during respiratory infections.
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- Runx-1
A protein that is a transcription factor controlling when genes are switched on or off. Runx-1 acts by binding to regulatory sequences — specific sequences of DNA close to the genes they regulate. These DNA sequences, called Runx-1 binding sites, are scattered throughout the human genome, wherever there is a gene under the control of […]
- Rupture
A break or tear in any organ (such as the spleen) or soft tissue (such as the achilles tendon).
- Rupture of appendix
A break or tear in the appendix, usually due to appendicitis. Also called perforation of the appendix. Rupture of appendix can lead to a periappendiceal abscess (a collection of infected pus) or diffuse peritonitis (infection of the entire lining of the abdomen and the pelvis). Also called perforation of the appendix.
- Rupture, uterine
A tear in the uterus. A uterine rupture is a very serious situation. Causes include trauma, labor with an unusually big baby, multiple gestation, and vaginal delivery after a prior C-section (in which the old C-section scar ruptures). Uterine rupture can lead to hysterectomy, urologic injury, the need for blood transfusion, and even the death […]
- Ruptured spleen
Rupture of the capsule of the spleen that is a potential catastrophe and requires immediate medical and surgical attention. Splenic rupture permits large amounts of blood to leak into the abdominal cavity, and it is severely painful and life threatening. Shock, and ultimately death, can result. Patients typically require immediate surgery. Rupture of a normal […]