I see Gy∙cm2 and mGy on the monitor of my angiography machine. What do these represent? These are two measured dosimetric quantities that can be used to estimate the radiation risks. Gy∙cm2 is used ...

Tests from 30 different salad drawers found a startling number of bacteria, with an average of 7,850 bacteria colony-forming units per square centimetre (cfu/cm2). In some cases, it found 129,000 ...