<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31409916</termId><termName>cellulose diacetate</termName><termType>PT</termType><termNote><![CDATA[ Compound used most frequently as a plastic in the production of motion picture film.  ]]></termNote><termCreatedDate>2026-03-30 20:50:13</termCreatedDate><relation><relationType>UF</relationType><termId>31409917</termId><termName>diacetate, cellulose</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31371018</termId><termName>cellulose acetate</termName><termType>PT</termType></relation></term>  </Zthes>