<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344309</termId><termName>cysteine</termName><termType>PT</termType><termNote><![CDATA[ Crystalline amino acid present in proteins and peptides. It has been explored as a non-toxic alternative to benzotriazole (BTA) for the conservation of archaeological objects with bronze disease.  ]]></termNote><termCreatedDate>2026-03-30 20:32:51</termCreatedDate><relation><relationType>BT</relationType><termId>31320316</termId><termName>amino acid</termName><termType>PT</termType></relation></term>  </Zthes>