<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31306034</termId><termName>adulterant</termName><termType>PT</termType><termNote><![CDATA[ Any material agent which weakens or debases the substance it is added to. ]]></termNote><termCreatedDate>2026-03-30 20:22:20</termCreatedDate><relation><relationType>UF</relationType><termId>31306035</termId><termName>adulterants</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298939</termId><termName>materials by function</termName><termType>PT</termType></relation></term>  </Zthes>