process by which the nucleus and duplicated chromosomes of a cell divide and are evenly distributed, forming two daughter nuclei. cytokinesis. process by which the cytoplasm of a cell is divided in two; usually follows mitosis and meiosis.
Lead source is a critical piece of data you need in order to assess the value of your marketing campaigns and part of proper lead management. By putting in place best practices, you will be sure you can measure the value of your marketing campaign efforts while also communicating with sales the important information about a lead.
A primary source is one that was written/drawn/taken by someone around the time of the event. A secondary source is one that was created some time after the event, by someone who wasn't there but researched it, e.g. a source from a textbook or a historian.