Its analgesic effects are only partially reversed by naloxone, hence indicating that its opioid action is unlikely the sole factor; tramadol's analgesic effects are also partially reversed by Î±2 adrenergic receptor antagonists like yohimbine and the 5-HT3 receptor antagonist, ondansetron.
Array formulas in versions before Excel 2007 cannot handle whole-column references. In Excel 2007, array formulas can handle whole-column references, but this forces calculation for all the cells in the column, including empty cells. This can be slow to calculate, especially for 1 million rows.
1 An Excel Array Formula performs multiple calculations on one or more sets of values (the âarray argumentsâ) and returns one or more results.  You designate to Excel that the formula in your formula bar should be an array formula via the key combination of Ctrl+Shift+Enter, instead of just pressing Enter.