diff --git a/internal-dev/ncit-ext.owl b/internal-dev/ncit-ext.owl
index 27487f6e..e425bfa6 100644
--- a/internal-dev/ncit-ext.owl
+++ b/internal-dev/ncit-ext.owl
@@ -1,147 +1,63 @@
 <?xml version="1.0"?>
-<rdf:RDF xmlns="http://purl.enanomapper.net/onto/internal/ncit-ext.owl#"
-     xml:base="http://purl.enanomapper.net/onto/internal/ncit-ext.owl"
-     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+<rdf:RDF xmlns="http://purl.enanomapper.net/onto/"
+     xml:base="http://purl.enanomapper.net/onto/"
+     xmlns:dc="http://purl.org/dc/elements/1.1/"
+     xmlns:obo="http://purl.obolibrary.org/obo/"
+     xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
      xmlns:owl="http://www.w3.org/2002/07/owl#"
-     xmlns:xml="http://www.w3.org/XML/1998/namespace"
      xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
-     xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
-     xmlns:obo="http://purl.obolibrary.org/obo/"
-     xmlns:dc="http://purl.org/dc/elements/1.1/">
-    <owl:Ontology rdf:about="http://enanomapper.github.io/ontologies/internal/ncit-ext.owl">
+     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
+
+    <owl:Ontology rdf:about="http://www.enanomapper.net/ontologies/nmlco.owl">
         <dc:contributor>Javier Millan Acosta</dc:contributor>
+        <dc:format>application/rdf+xml</dc:format>
+        <dc:title>NMLCO - Nanomaterial Life Cycle Ontology</dc:title>
+        <dc:language>en</dc:language>
+        <dc:rights>http://creativecommons.org/licenses/by/3.0</dc:rights>
+        <dc:description>Ontology covering the domain of nanomaterial life cycle assessment</dc:description> 
     </owl:Ontology>
 
+ <!-- 
+    ///////////////////////////////////////////////////////////////////////////////////////
+    //
+    // Annotation properties
+    //
+    ///////////////////////////////////////////////////////////////////////////////////////
+     -->
 
-    <!-- http://purl.enanomapper.org/onto/ENM_9000267 -->
-
-    <owl:Class rdf:about="http://purl.enanomapper.org/onto/ENM_9000267">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/NCIT_C119826"/>
-        <rdfs:isDefinedBy>Pulmonary exposure is performed by instillation of test substance dispersed in a liquid vehicle. The liquid is delivered/blown into the lungs of sedated animals. The exposure is a bolus exposure and the dose is delivered within seconds.</rdfs:isDefinedBy>
-        <rdfs:label xml:lang="en">Pulmonary instillation</rdfs:label>
-    </owl:Class>    
     
-    <!-- http://purl.enanomapper.net/onto/ENM_2659304 -->
-
-    <owl:Class rdf:about="http://purl.enanomapper.net/onto/ENM_2659304">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/NCIT_C14238"/>
-        <rdfs:label xml:lang="en">HsdOla:TO mouse</rdfs:label>
-    </owl:Class>
-
-    <!-- http://www.ebi.ac.uk/efo/EFO_0002888 -->
-        <owl:Class rdf:about="http://www.ebi.ac.uk/efo/EFO_0002888">
-	<rdfs:subClassOf>
-            <owl:Restriction>
-                <owl:onProperty rdf:resource="http://www.bioassayontology.org/bao#BAO_0090006"/>
-                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/NCIT_C14238"/>
-            </owl:Restriction>
-        </rdfs:subClassOf>
-    </owl:Class>
-
-    <!-- http://purl.obolibrary.org/obo/NCIT_C20222 -->
-
-
-    <owl:Class rdf:about="http://purl.obolibrary.org/obo/NCIT_C20222">
-	<rdfs:subClassOf>
-            <owl:Restriction>
-                <owl:onProperty rdf:resource="http://www.bioassayontology.org/bao#BAO_0090006"/>
-                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/NCIT_C160998"/>
-            </owl:Restriction>
-        </rdfs:subClassOf>
-    </owl:Class>
-
-    <!-- http://purl.enanomapper.net/onto/ENM_0893129 -->
-
-
-    <owl:Class rdf:about="http://purl.enanomapper.net/onto/ENM_0893129">
-    <rdfs:label xml:lang="en">Murine dendritic cell line</rdfs:label>
-    <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/BTO_0002042"/>
-	<rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0002887"/>
-    </owl:Class>
-
-
-    <!-- http://purl.enanomapper.net/onto/ENM_2866075 -->
-
 
-    <owl:Class rdf:about="http://purl.enanomapper.net/onto/ENM_0893129">
-    <rdfs:label xml:lang="en">Human PMØ</rdfs:label>
-    <rdfs:label xml:lang="en">Human peritoneal macrophage cell line</rdfs:label>
+    <!-- 
+    ///////////////////////////////////////////////////////////////////////////////////////
+    //
+    // Object Properties
+    //
+    ///////////////////////////////////////////////////////////////////////////////////////
+     -->
 
-    <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/BTO_0001034"/>
-	<rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0002888"/>
-    </owl:Class>
-
-    <!-- http://purl.enanomapper.net/onto/ENM_2866074 -->
-
-
-    <owl:Class rdf:about="http://purl.enanomapper.net/onto/ENM_2866074">
-    <rdfs:label xml:lang="en">HKC</rdfs:label>
-    <rdfs:label xml:lang="en">Human kidney cell line</rdfs:label>
-
-    <rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0001643"/>
-	<rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0002888"/>
-    </owl:Class>
-
-
-    <!-- http://purl.enanomapper.net/onto/ENM_0617835 -->
-
-
-    <owl:Class rdf:about="http://purl.enanomapper.net/onto/ENM_0617835">
-    <rdfs:label xml:lang="en">MSC</rdfs:label>
-    <rdfs:label xml:lang="en">Mesothelioma cell line</rdfs:label>
-
-    <rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0001639"/>
-    </owl:Class>
-
-    <!-- http://purl.enanomapper.net/onto/ENM_0617835 -->
-
-
-    <owl:Class rdf:about="http://purl.enanomapper.net/onto/ENM_0617835">
-    <rdfs:label xml:lang="en">hMSC</rdfs:label>
-    <rdfs:label xml:lang="en">Human mesothelioma cell line</rdfs:label>
-
-    <rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0001639"/>
-	<rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0002888"/>
-    </owl:Class>
-
-    <!-- http://purl.enanomapper.net/onto/ENM_0951914 -->
-    <owl:Class rdf:about="http://purl.enanomapper.net/onto/ENM_0951914">
-    <rdfs:label xml:lang="en">Lung cell line</rdfs:label>
-    <rdfs:label xml:lang="en">Pulmonary cell line</rdfs:label>
-    <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/CL_0000010"/>
-	<rdfs:subClassOf>
-            <owl:Restriction>
-                <owl:onProperty rdf:resource="http://www.bioassayontology.org/bao#BAO_0090006"/>
-                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/BTO_0000763"/>
-            </owl:Restriction>
-        </rdfs:subClassOf>
-    </owl:Class>
+    
 
-    <!-- http://purl.obolibrary.org/obo/CL_0001035 -->
-    <owl:Class rdf:about="http://purl.obolibrary.org/obo/CL_0001035">
-	<rdfs:subClassOf>
-            <owl:Restriction>
-                <owl:onProperty rdf:resource="http://www.bioassayontology.org/bao#BAO_0090006"/>
-                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/NCIT_C12366"/>
-            </owl:Restriction>
-        </rdfs:subClassOf>
-    </owl:Class>
 
+    <!-- 
+    ///////////////////////////////////////////////////////////////////////////////////////
+    //
+    // Classes
+    //
+    ///////////////////////////////////////////////////////////////////////////////////////
+     -->
 
-    <!-- http://purl.enanomapper.net/onto/ENM_7054247 -->
-    <owl:Class rdf:about="http://purl.enanomapper.net/onto/ENM_7054247">
-    <rdfs:label xml:lang="en">CCL-131</rdfs:label>
-    <rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0005214"/>
-    <rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0002887"/>
+    <!-- http://purl.enanomapper.net/onto/NMLCO_00000000 -->
 
+    <owl:Class rdf:about="http://purl.enanomapper.net/onto/NMLCO_00000000">
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/BFO_0000015"/>   
+        <rdfs:label xml:lang="en">Nanomaterial lifecycle stage</rdfs:label>
     </owl:Class>
 
-    <!-- http://purl.enanomapper.net/onto/ENM_2866074 -->
-    <owl:Class rdf:about="http://purl.enanomapper.net/onto/ENM_2866074">
-    <rdfs:label xml:lang="en">Mouse platelets</rdfs:label>
-    <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/CL_0000233"/>
-    <rdfs:subClassOf rdf:resource="http://www.ebi.ac.uk/efo/EFO_0002887"/>
+    <!-- http://purl.enanomapper.net/onto/NMLCO_00000010 -->
 
+    <owl:Class rdf:about="http://purl.enanomapper.net/onto/NMLCO_00000010">
+        <rdfs:subClassOf rdf:resource="http://purl.enanomapper.net/onto/NMLCO_00000000"/>   
+        <rdfs:label xml:lang="en">Environmental fate</rdfs:label>
     </owl:Class>
 
 </rdf:RDF>