<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">nitrate cels</topic></authority><related type="other"><topic>cellulose nitrate film</topic></related><related type="other"><topic>nitrocellulose</topic></related><related type="broader"><topic>animation cels</topic></related><variant type="other"><topic>cels, nitrate</topic></variant><variant type="other"><topic>nitrate cel</topic></variant> <note xml:lang="en"><![CDATA[ Animation cels made from cellulose nitrate, which were common during the 1920s through 1940s. The material was thereafter replaced because it was unstable and prone to yellowing, wrinking, and shrinkage. ]]></note></mads>