In honey bee nest building, the chosen cavity is cleaned and its surface is lined with

In honey bee nest building, the chosen cavity is cleaned and its surface is lined with propolis which is a substance the bees made by mixing plant resins, wax secreted from glands in their abdomens, and their saliva. Propilis has antibacterial properties which help protect the nest from harmful bacteria.

tgrfdfgmnbdkfjgdfgdfgdfg

that is wrong, its not thymus.