[Microbiology] Candida culturing

Christopher M Havens via microbio%40net.bio.net (by CHAVENS from uwyo.edu)
Fri Aug 1 12:13:13 EST 2008

   I have been having some trouble maintaining cultures of candida which I have aquired from ATCC.  My first plate, made from the rehydrated powder they send always looks fine, giving reasonable numbers of good sized, unifrom colonies.  But when I make a culture from that plate, spin down the cells, and then dilute and make new plates for counting I always end up with plates overgrown with tiny colonies which look quite different from the colonies yielded from the original rehydration.  The numbers of these small colonies gives improbably high counts given my dilutions.  I feel quite confident that I am using good sterile technique and that my problem is not due to contamination.  Additionally I can isolate any of these colonies, stain them, and they appear as candida when viewed microscopically.
   Does anyone know what I am experiencing?  Is this due to spore formation?  Any help would be really appreciated.

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