Urea breath test. A person drinks a liquid containing a low level of radioactive material that is harmless or a nonradioactive material. If H. pylori is present in the person's gastrointestinal tract, the material will be broken down into labeled carbon dioxide gas that is expelled in the breath.
An active worksheet is the worksheet that is currently open. For example, in the picture above, the sheet tabs at the bottom of the window show Sheet1, Sheet2, and Sheet3, with Sheet1 being the active worksheet.The active tab usually has a white background behind the tab name.preadsheet. Alternatively referred to as a worksheet, a spreadsheet is a file made of rows and columns that help sort data, arrange data easily, and calculate numerical data. What makes a spreadsheet software program unique is its ability to calculate values using mathematical formulas and the data in cells.
Represents a data series in the active chart. This function is used only in charts; you cannot use it in worksheets. You normally create a chartâwith its SERIES functionsâusing an option in Excel's Insert, Chart group. But after you create the chart, you can manually edit the SERIES formula.