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    <!-- http://purl.obolibrary.org/obo/RO_0002452 -->

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        <rdfs:label>has symptom</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/RO_0004029 -->

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        <rdfs:label>disease has feature</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/DOID_0060312 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/DOID_0060312">
        <rdfs:label xml:lang="en">angular cheilitis</rdfs:label>
    </Class>
    


    <!-- http://purl.obolibrary.org/obo/DOID_1456 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/DOID_1456">
        <rdfs:label xml:lang="en">glossitis</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/DOID_1762 -->

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        <rdfs:label xml:lang="en">cheilitis</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/DOID_5113 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/DOID_5113">
        <rdfs:label xml:lang="en">nutritional deficiency disease</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/DOID_8454 -->

    <Class rdf:about="http://purl.obolibrary.org/obo/DOID_8454">
        <rdfs:label xml:lang="en">riboflavin deficiency</rdfs:label>
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        <oboInOwl:hasDbXref>ICD10CM:E53.0</oboInOwl:hasDbXref>
        <oboInOwl:id>DOID:8454</oboInOwl:id>
        <ns4:IAO_0000115 xml:lang="en">A nutritional deficiency disease that is characterized by stomatitis, cheilosis, glossitis, conjunctivitis, and anemia, develops_from vitamin B2 (riboflavin) deficiency, has_symptom red chapped lips, painful swollen tongue, sore throat, blurred vision, and fatigue, and has_material_basis_in inadequate intake, endocrine disorder, liver disorder, alcoholism, and dialysis.</ns4:IAO_0000115>
        <oboInOwl:hasDbXref>SNOMEDCT_US_2025_09_01:20307000</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>UMLS_CUI:C0035528</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>MESH:D012257</oboInOwl:hasDbXref>
        <oboInOwl:hasDbXref>ICD9CM:266.0</oboInOwl:hasDbXref>
        <oboInOwl:hasExactSynonym xml:lang="en">ariboflavinosis</oboInOwl:hasExactSynonym>
        <oboInOwl:hasOBONamespace>disease_ontology</oboInOwl:hasOBONamespace>
        <oboInOwl:hasExactSynonym xml:lang="en">vitamin B2 deficiency</oboInOwl:hasExactSynonym>
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        <rdfs:label xml:lang="en">stomatitis</rdfs:label>
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        <rdfs:label>conjunctivitis</rdfs:label>
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        <rdfs:label>anemia</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/SYMP_0019177 -->

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        <rdfs:label>fatigue</rdfs:label>
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    <!-- http://purl.obolibrary.org/obo/SYMP_0020055 -->

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        <rdfs:label>pharynx inflammation</rdfs:label>
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