> For with no pollen once nurse bees bodies used up, hives collapse, and this has been written about for decades way back to turn of 1900s even.

No one doubts that without protein, bees can't raise brood. That isn't what this is about. It is about the effect on the adults. 

By the way, it would help if you give a hint as to what you are referencing when you say "this has been written about for decades". I am sure it has, but where?

PLB

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