>>>as a result of adding saliva during both scraping and chewing<<< (Of propolis)

I'd like to know more about this. Are we projecting here? It's hard to imagine bees with saliva. At the same time it's hard to imagine them without it.  I think their chewing parts are exterior. I know it has antimicrobial properties but so must tree sap. After all, the trees are under assault all their lives. 

Just musing,

Dick Marron

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