<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31317727</termId><termName>biodeterioration</termName><termType>PT</termType><termNote><![CDATA[ Biologically mediated loss of utilitarian or physical characteristics of a material caused by bacteria or other microorganisms. Biodeterioration includes only physical disintegration and cosmetic disfigurement. For deterioration that includes molecular changes to a material such that characteristic properties of the material are no longer evident, use 'biodegradation.' ]]></termNote><termCreatedDate>2026-03-30 20:25:33</termCreatedDate><relation><relationType>UF</relationType><termId>31317728</termId><termName>biocorrosion</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31317729</termId><termName>biological corrosion</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31317730</termId><termName>corrosion, biological</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31317731</termId><termName>deterioration, biological</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31304821</termId><termName>deterioration</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31341495</termId><termName>biodegradation</termName><termType>PT</termType></relation></term>  </Zthes>