1. 
   Factors
   Companies that buy accounts receivable, which are debts for merchandise or services bought on credit. Factors assume the job of collecting the money due.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   factors
   A group of growth factors produced in blood and other tissues that are needed to differentiate stem cells into granulocyte and monocyte colonies.
   Found op http://www.swicancer.org/glossary/Default.xhtml
   
   
3. 
   factors
   1) Components 2) Contributing elements 3) Elements
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/factors/1
   
   

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