The packaging of eukaryotic DNA into chromatin sterically occludes polymerases, recombinases and repair enzymes. How chromatin structure changes to allow their actions is unknown. We constructed ...

Use an Excel array function to create an AverageIf function Your email has been sent Excel doesn't have a built-in AVERAGEIF() function, but you can still average values, conditionally. Excel has ...

Turns out half my old formulas were just dynamic arrays in disguise, written the long way.

In addition to the new SORT function, you may also find the new FILTER and UNIQUE array functions useful. For example, the worksheet on the next page contains a detailed listing of invoices in columns ...