<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31343472</termId><termName>magnesium sulfate</termName><termType>PT</termType><termNote><![CDATA[ A white salt used medicinally as a laxative and anticonvulsant. In conservation science it is encountered as a salt weathering deposit on stone. ]]></termNote><termCreatedDate>2026-03-30 20:32:38</termCreatedDate><relation><relationType>UF</relationType><termId>31343473</termId><termName>magnesium sulphate</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31343474</termId><termName>sulfate, magnesium</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31373704</termId><termName>sulfate</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31319736</termId><termName>compounds</termName><termType>PT</termType></relation></term>  </Zthes>