This is the thin tissue that lines the chest cavity and surrounds the lungs. Pleural effusion is an abnormal, excessive collection of this fluid. Transudative pleural effusion is caused by fluid leaking into the pleural space. This is from increased pressure in the blood vessels or a low blood protein count. Congestive heart failure is the most common cause.
Retrospective Rating (Retro) is a safety incentive program offered by L&I. In Retro you can earn a partial refund of your workersâ compensation premiums if you reduce workplace injuries and lower associated claim costs. See what's new in Retro.
retrovirus. [-vÄ«â²rÉs]. Etymology: L, retro + virus. any of a family of ribonucleic acid (RNA) viruses containing the enzyme reverse transcriptase in the virion. The genetic information of the virus is stored in a molecule of single-stranded ribonucleic acid.etrovirus. A family of RNA viruses containing a reverse transcriptase enzyme which allows the viruses' genetic information to become part of the genetic information of the host cell upon replication. Mentioned in: AIDS, AIDS Tests, Antiretroviral Drugs, Antiviral Drugs, Tropical Spastic Paraparesis.