<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>51593</termId><termName>Cysteine proteinases</termName><termType>TT</termType><termLanguage>en</termLanguage><termVocabulary>TESAURO DE MATERIAS DE SERBIULA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>Cysteine proteinases</termSortkey><termCreatedDate>Cysteine proteinases</termCreatedDate></term>  </Zthes>