<?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://roble.intecca.uned.es/tematres/lem/">Alcaloides</topic></authority><related type="narrower"><topic>Cafeína</topic></related><related type="narrower"><topic>Cocaína</topic></related><related type="narrower"><topic>Docetaxel</topic></related><related type="narrower"><topic>Mescalina</topic></related><related type="narrower"><topic>Morfina</topic></related><related type="narrower"><topic>Naltrexona</topic></related><related type="narrower"><topic>Teofilina</topic></related><related type="other"><topic>Plantas medicinales</topic></related><related type="other"><topic>Drogas</topic></related><related type="other"><topic>Química orgánica</topic></related> <note xml:lang="es"><![CDATA[ Véase además el nombre de los distintos alcaloides: Cocaina ]]></note></mads>