View New Customer Application. Produced by Vibrio cholerae, cholera toxin (CT) is a multimeric enterotoxin that transfers ADP-ribose to a G protein, locking adenylate cyclase in an 'on' position.
An echocardiogram (echo=sound + card=heart + gram=drawing) is an ultrasound test that can evaluate the structures of the heart, as well as the direction of blood flow within it. Technicians specially trained in echocardiography produce the images and videos, often using a special probe or transducer that is placed in various places on the chest wall, to view the heart from different directions.
An echocardiogram may show a number of abnormalities in the structure and function of the heart, such as: 1  thickening of the wall of the heart muscle (especially the left ventricle). 2  abnormal motion of the heart muscle. 3  blood leaking backward through the heart valves (regurgitation).