<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31341481</termId><termName>denaturation</termName><termType>PT</termType><termNote><![CDATA[ In biology, a modification of a protein’s structure brought about by heat, alkalis, and other factors, which causes it to collapse into a disordered mass. The process Is irreversible for most proteins. In conservation science, the denaturation of leather and parchment is studied by various analytical techniques.   ]]></termNote><termCreatedDate>2026-03-30 20:32:05</termCreatedDate><relation><relationType>UF</relationType><termId>31341482</termId><termName>denatured</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31341483</termId><termName>denaturing</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31317720</termId><termName>decomposition</termName><termType>PT</termType></relation></term>  </Zthes>