1. 
   prototroph
   A strain of microorganism whose nutritional requirements do not exceed those of the corresponding wild-type strain.
   Found op http://ppathw3.cals.cornell.edu/glossary/Defs_P.htm
   
   
2. 
   Prototroph
   The wild-type parent from which an auxotrophic mutant has been derived.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   prototroph
   The parent from which an auxotrophic mutant has been derived. Contrast with auxotroph. ... (09 Oct 1997) ...
   Found op http://www.mondofacto.com/facts/dictionary?prototroph
   
   
4. 
   prototroph
   (pro´to-trōf) an organism with the same growth factor requirements as the ancestral strain; said of microbial mutants. adj., prototroph´ic., adj.
   Found op http://www.encyclo.co.uk/local/21001
   
   
5. 
   prototroph
   prototroph 1. A microorganism that has the same nutritional requirements as the parent organism. 2. A bacterial strain that has the same nutritional requirements as the wild-type strain from which it was derived. 3. An organism or cell capable of synthesizing all of its metabolites from inorganic...
   Found op http://www.wordinfo.info/words/index/info/view_unit/2191/8
   
   
6. 
   prototroph
   Type: Term Pronunciation: prō′tō-trof, -trōf Definitions: 1. A bacterial strain that has the same nutritional requirements as the wild-type strain from which it was derived.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=73163
   
   

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