<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31343725</termId><termName>orcein</termName><termType>PT</termType><termNote><![CDATA[ A naturally occurring red colorant derived from any of several lichens. It was widely used in antiquity for textile dyeing. Orcein is the essential constituent of archil and is used as a biological stain. ]]></termNote><termCreatedDate>2026-03-30 20:32:42</termCreatedDate><relation><relationType>BT</relationType><termId>31319788</termId><termName>colorant for dye and pigment</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31437145</termId><termName>archil</termName><termType>PT</termType></relation></term>  </Zthes>