Malignant Tumors. A malignant tumor is a group of diseased cells defined by one of three characteristics: uncontrolled growth, invasion and damage of healthy cells, or metastasizing (spreading) to other organs of the body.They differ from benign tumors, which do not spread or affect other areas of the body. malignant tumor is a group of diseased cells defined by one of three characteristics: uncontrolled growth, invasion and damage of healthy cells, or metastasizing (spreading) to other organs of the body.
Excel Replace Function. The Excel Replace function is similar to the Excel Substitute Function. The Substitute function replaces one or more instances of a given text string. Basic Description. The Excel Replace function replaces all or part of a text string with another string.
To see a list of all Excel functions just type the word 'function' into MS Excel Help and you will get a list of all of â¦ them. Basically a function is a device that does calculations behind the scenes and shows the result in a particular cell. Function in Microsoft Excel is a pre-defined formula used to performing common operations.   There are about 250 functions in Excel, depending on the version. They ra â¦ nge from the simple such as =Sum() and =Average() to Bessel functions and stuff I've never heard of.