<?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">photographic gelatin</topic></authority><related type="broader"><topic>gelatin</topic></related><variant type="other"><topic>gelatin, photographic</topic></variant><variant type="other"><topic>gelatin, photosensitive</topic></variant><variant type="other"><topic>photosensitive gelatin</topic></variant> <note xml:lang="en"><![CDATA[ Gelatin that is chemically purer and physically more refined than food-quality gelatin and is used as the binding medium in some photographic emulsions. ]]></note></mads>