1. 
   cfu
   Colony-forming unit.
   Found op http://ppathw3.cals.cornell.edu/glossary/Defs_C.htm
   
   
2. 
   CFU
   Call Forwarding Unconditional (i.e. every incoming call will be forwarded). In effect, `do not disturb`.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   CFU
   abbreviation for 'colony forming units,' a count of the number of active bacterial cells in preparations of Lactobacillus acidophilus and other 'friendly' organisms of the digestive system. Counts as high as one billion CFU per gram are not uncommon.
   Found op http://www.unc.edu/~rowlett/units/dictC.html
   
   
4. 
   cfu
   1) Colony-forming unit
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/cfu/1
   
   

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