Cardiac conditions. Certain subtypes of troponin (cardiac I and T) are very sensitive and specific indicators of damage to the heart muscle (myocardium). They are measured in the blood to differentiate between unstable angina and myocardial infarction (heart attack) in people with chest pain or acute coronary syndrome.
Virtual reality (VR) typically refers to computer technologies that use virtual reality headsets to generate the realistic images, sounds and other sensations that replicate a real environment or create an imaginary setting. VR also simulates a user's physical presence in this environment.
What is the real difference? Think scuba diving vs. going to the aquarium. With virtual reality, you can swim with sharks. And with augmented reality, you can watch a shark pop out of your business card. While VR is more immersive, AR provides more freedom for the user, and more possibilities for marketers because it does not need to be a head-mounted display.