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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">SISTEMA INMUNE</topic></authority><related type="narrower"><topic>CELULAS INMUNOCOMPETENTES</topic></related><related type="narrower"><topic>FAGOCITOS</topic></related><related type="narrower"><topic>MEDULA OSEA</topic></related><related type="narrower"><topic>TEJIDO LINFOIDE</topic></related><related type="narrower"><topic>VASOS LINFATICOS</topic></related><related type="broader"><topic>ANATOMIA</topic></related><related type="broader"><topic>INMUNOLOGIA</topic></related><variant type="other"><topic>Sistema inmunológico</topic></variant></mads>