Any of the glands in silk-spinning insects and spiders that secrete a protein liquid that hardens into silk on exposure to air. [ http://purl.obolibrary.org/obo/BTO_0001250 ]
This is just here as a test because I lose it
Any of the glands in silk-spinning insects and spiders that secrete a protein liquid that hardens into silk on exposure to air. [ http://purl.obolibrary.org/obo/BTO_0001250 ]