<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>55902</termId><termName>Homocysteine</termName><termType>TT</termType><termLanguage>en</termLanguage><termVocabulary>TESAURO DE MATERIAS DE SERBIULA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>Homocysteine</termSortkey><termCreatedDate>Homocysteine</termCreatedDate></term>  </Zthes>