diff --git a/service/kg-search-ebrains/src/main/java/eu/ebrains/kg/projects/ebrains/source/DatasetVersionV3.java b/service/kg-search-ebrains/src/main/java/eu/ebrains/kg/projects/ebrains/source/DatasetVersionV3.java
index 5c0c85b4..89299578 100644
--- a/service/kg-search-ebrains/src/main/java/eu/ebrains/kg/projects/ebrains/source/DatasetVersionV3.java
+++ b/service/kg-search-ebrains/src/main/java/eu/ebrains/kg/projects/ebrains/source/DatasetVersionV3.java
@@ -161,6 +161,7 @@ public static class StudiedSpecimen {
     @Setter
     public static class StudiedState {
         private String id;
+        private String internalIdentifier;
         private List<String> descendedFrom;
         private List<String> type;
         private String additionalRemarks;
diff --git a/service/kg-search-ebrains/src/main/java/eu/ebrains/kg/projects/ebrains/translators/utils/SpecimenTranslator.java b/service/kg-search-ebrains/src/main/java/eu/ebrains/kg/projects/ebrains/translators/utils/SpecimenTranslator.java
index 32e4a4cc..60270b14 100644
--- a/service/kg-search-ebrains/src/main/java/eu/ebrains/kg/projects/ebrains/translators/utils/SpecimenTranslator.java
+++ b/service/kg-search-ebrains/src/main/java/eu/ebrains/kg/projects/ebrains/translators/utils/SpecimenTranslator.java
@@ -141,9 +141,12 @@ private static FullNameRef undefinedFullnameRef() {
         return fullNameRef;
     }
 
-    private static String getLabel(int index) {
+    private static String getLabel(int index, DatasetVersionV3.StudiedState studiedState) {
         int base = 'A';
         //TODO fix for index > 26
+        if (StringUtils.isNotBlank(studiedState.getInternalIdentifier())) {
+            return studiedState.getInternalIdentifier().trim();
+        }
         return String.valueOf((char) (base + index));
     }
 
@@ -185,9 +188,9 @@ private BasicHierarchyElement<Object> translateToBasicHierarchyElement(DatasetVe
             final String parentLabel = translator.calculateLabel(studiedState.getParent());
             String label;
             if (attachRootElementAsChild && StringUtils.isNotBlank(parentLabel)) {
-                label = getFullStateLabel(translator, getLabel(order), studiedState);
+                label = getFullStateLabel(translator, getLabel(order, studiedState), studiedState);
             } else {
-                label = String.format("State %s", getLabel(order));
+                label = String.format("State %s", getLabel(order, studiedState));
             }
             elState.setTitle(label);
             elState.setData(translator.translateState(studiedState, label));
diff --git a/service/kg-search-ebrains/src/main/resources/queries/datasetVersion.json b/service/kg-search-ebrains/src/main/resources/queries/datasetVersion.json
index f2b8b2cf..7154be5f 100644
--- a/service/kg-search-ebrains/src/main/resources/queries/datasetVersion.json
+++ b/service/kg-search-ebrains/src/main/resources/queries/datasetVersion.json
@@ -1300,6 +1300,10 @@
               "propertyName": "query:id",
               "path": "@id"
             },
+            {
+              "propertyName": "query:internalIdentifier",
+              "path": "https://openminds.ebrains.eu/vocab/internalIdentifier"
+            },
             {
               "propertyName": "query:descendedFrom",
               "path": [
@@ -1940,6 +1944,10 @@
                   "propertyName": "query:id",
                   "path": "@id"
                 },
+                {
+                  "propertyName": "query:internalIdentifier",
+                  "path": "https://openminds.ebrains.eu/vocab/internalIdentifier"
+                },
                 {
                   "propertyName": "query:descendedFrom",
                   "path": [