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 is a test that uses high-frequency. sound waves (ultrasound) to check your heart. The sound. waves bounce (or âechoâ) off structures in your heart, and. the echoes are shown as images on a monitor. A stress echocardiogram compares your heart when it is at. rest and when it is working hard.