<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31411602</termId><termName>egg</termName><termType>PT</termType><termNote><![CDATA[ Material derived from eggs, which in the context of art materials are usually the ellipsoidal shell and embryonic contents produced by birds. For paintings, the egg contents are used as a tempera medium. The whole egg, yolk, or white may be used sometimes mixed with oil and/or resin. The egg yolk is a stable emulsion of an aqueous liquid with an oily, proteinaceous medium which dries quickly into a hard, insoluble film. Egg white has been used as a medium for illuminated manuscripts. It is also used as a size for attaching gold leaf. Albumen is the adhesive substance of egg white. As a pure film, albumen is clear, brittle, and water soluble. Water solubility can be decreased by heating or adding tannin. For the exterior of a bird egg comprising the brittle shell composed of keratin and calcite, use "eggshell (animal material)." ]]></termNote><termCreatedDate>2026-03-30 20:50:40</termCreatedDate><relation><relationType>BT</relationType><termId>31374418</termId><termName>animal material by egg and egg components</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31391208</termId><termName>egg toppers</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31391210</termId><termName>egg washers</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31456381</termId><termName>egg tempera</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31456387</termId><termName>egg-oil tempera</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31303785</termId><termName>eggs</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31320604</termId><termName>eggshell</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31391198</termId><termName>egg candlers</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31391200</termId><termName>egg carriers</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31391204</termId><termName>egg punches</termName><termType>PT</termType></relation></term>  </Zthes>