Quoting Dan Weaver:

 > Although the study didn't uncover a single cause for CCD, it  
"provides some hints and suggestive evidence that maybe there's a  
general impairment of bees' ability to cope with pathogens at a basic  
regulatory step. It would be better if we had more definitive evidence  
of what exactly is going on. I think that would be everyone's fervent  
hope. But so far that hasn't materialized. I'm happy that we're making  
progress. It's just painfully slow."

http://www.the-scientist.com/blog/display/55919

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