Ablation, also known as catheter ablation, is a treatment that aims to control or correct certain types of abnormal heart rhythms. It uses either heat (radiofrequency ablation) or freezing (cryoablation) on the area of your heart thatâs causing the abnormal heart rhythm (or arrhythmia). This treatment creates scar tissue which: breaks abnormal circuits in the heart; destroys areas of the heart muscle which are triggering arrhythmias.
Medical Definition of RHODOPSIN. : a red photosensitive pigment in the retinal rods of marine fishes and most higher vertebrates that is important in vision in dim light, is quickly bleached by light to a mixture of opsin and retinal, and is regenerated in the darkâcalled also visual purple. a red photosensitive pigment in the retinal rods of the eye of most vertebrates that is important in vision in dim light âcalled also visual purple. ADVERTISEMENT.
Introduction. The Rhodophyta (red algae) are a distinct eukaryotic lineage characterized by the accessory photosynthetic pigments phycoerythrin, phycocyanin and allophycocyanins arranged in phycobilisomes, and the absence of flagella and centrioles (Woelkerling 1990).his is a large assemblage of between 2500 and 6000 species in about 670 largely marine genera (Woelkerling 1990) that predominate along the coastal and continental shelf areas of tropical, temperate and cold-water regions (L ning 1990).