<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344838</termId><termName>nitrite</termName><termType>PT</termType><termNote><![CDATA[ Refers to any salt or ester of nitrous acid.  ]]></termNote><termCreatedDate>2026-03-30 20:33:00</termCreatedDate><relation><relationType>UF</relationType><termId>31344839</termId><termName>nitrites</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31320494</termId><termName>salt</termName><termType>PT</termType></relation></term>  </Zthes>