<?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">protozoans</topic></authority><related type="other"><topic>microorganisms</topic></related><related type="broader"><topic>Eukaryota</topic></related><variant type="other"><topic>protozoons</topic></variant><variant type="other"><topic>Protozoa</topic></variant><variant type="other"><topic>protozoan</topic></variant> <note xml:lang="en"><![CDATA[ General term for many types of microscopic organisms that were formerly thought to be a related group, but are today believed to instead represent organisms that do not necessarily share a common evolutionary history. They have in common that they are single-celled and heterotrophic eukaryotes, have a membrane-bound nucleus, are nonfilamentous, and are confined to moist or aquatic habitats, ubiquitous worldwide. Many are symbionts of other organisms, and some species are parasites.  ]]></note></mads>