For viruses, classification is normally based on type of nucleic acid, morphology, presence or absence of an envelope and replication properties. A number of families is recognized, with the family name ending in -viridae, e.g. Poxviridae (double-stranded DNA, enveloped animal viruses).
Heartburn, regurgitation, and dyspepsia are a few of the most common acid reflux symptoms. Heartburn. Also called acid indigestion, heartburn is a burning pain or discomfort that can move up from your stomach to the middle of your abdomen and chest. The pain can also move into your throat.
By Mayo Clinic Staff. Bile reflux occurs when bile â a digestive liquid produced in your liver â backs up (refluxes) into your stomach and the tube that connects your mouth and stomach (esophagus). Bile reflux may accompany acid reflux, the medical term for the backwash of stomach acids into your esophagus. However, bile acid reflux and acid reflux are separate conditions. Whether bile is important in reflux is controversial.