Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are two liver enzymes measured in a blood test to check the health of your liver. High AST and ALT levels are a general sign of ...

whilst AT&T and AST also successfully completed another video call by satellite to an everyday smartphone over AT&T spectrum. What’s key to the tests is that the calls were made to unmodified everyday ...