Re: Propolis in combs

In this work Raman spectroscopic investigations of the spatial distribution and chemical composition of wax and propolis in the comb of A. mellifera carnica (Pollm.) were performed. It was shown that propolis is used not only as a sealer for the hive and to disinfect the internal walls of the comb cells, but it is also found at the rim of the comb cells in a thick layer. The function of this rim remains to be elucidated. 

Strehle, M. A., et al. "Raman spectroscopic study of spatial distribution of propolis in comb of Apis mellifera carnica (Pollm.)." Biopolymers: Original Research on Biomolecules 72.4 (2003): 217-224.

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