The respiratory tract is the subdivision of the respiratory system involved with the process of conducting air to the alveoli for the purposes of gas...

Respiratory tract infections (RTIs) are infectious diseases involving the lower or upper respiratory tract. An infection of this type usually is further...

An upper respiratory tract infection (URTI) is an illness caused by an acute infection, which involves the upper respiratory tract, including the nose...

Lower respiratory tract infection (LRTI) is a term often used as a synonym for pneumonia but can also be applied to other types of infection including...

orthopneumovirus, is a contagious virus that causes infections of the respiratory tract. It is a negative-sense, single-stranded RNA virus. Its name is derived...

approximately 1.3 kilograms (2.9 pounds). The lungs are part of the lower respiratory tract that begins at the trachea and branches into the bronchi and bronchioles...

respiratory tract including the trachea, bronchi, bronchioles, alveoli, pleurae, pleural cavity, the nerves and muscles of respiration. Respiratory diseases...

Respiratory syncytial virus vaccine is indicated for active immunization for the prevention of lower respiratory tract disease caused by respiratory syncytial...

Garewal H (February 2008). "Field defects in progression to gastrointestinal tract cancers". Cancer Lett. 260 (1–2): 1–10. doi:10.1016/j.canlet.2007.11.027...

Symptomatic infections are usually mild and limited to the upper respiratory tract, but progression to pneumonia is relatively common. Pneumonia may...