diff --git a/docs/scrna2.ipynb b/docs/scrna2.ipynb
index c5e6fbf..677901e 100644
--- a/docs/scrna2.ipynb
+++ b/docs/scrna2.ipynb
@@ -193,8 +193,20 @@
    "metadata": {},
    "source": [
     "None of the cell type names are valid.\n",
-    "\n",
-    "We'll now search the public ontology and add the name found in the dataset as a synonym to the top match found in the public ontology."
+    "We'll now look up the non-validated cell types using the values of the public ontology and create a mapping."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "tags": [
+     "hide-output"
+    ]
+   },
+   "outputs": [],
+   "source": [
+    "curator.non_validated[\"cell_type_untrusted\"]"
    ]
   },
   {
@@ -207,23 +219,25 @@
    },
    "outputs": [],
    "source": [
-    "bionty = bt.CellType.public()  # access the public ontology through bionty\n",
-    "name_mapping = {}\n",
-    "for invalid_name in adata_validated.obs[\"cell_type_untrusted\"].unique():\n",
-    "    ontology_id = bionty.search(invalid_name).index[0]  # top search hit through iloc[0]\n",
-    "    record = bt.CellType.from_source(ontology_id=ontology_id)\n",
-    "    name_mapping[invalid_name] = record.name  # map the original name to standardized name\n",
-    "    record.save()\n",
-    "    # record.add_synonym(name)  # optionally save the invalid name as synonym so that it becomes searchable\n",
-    "# print the mapping\n",
-    "print(name_mapping)"
+    "ct_public_lo = bt.CellType.public().lookup()\n",
+    "name_mapping = {\n",
+    "    \"Dendritic cells\": ct_public_lo.dendritic_cell.name,\n",
+    "    \"CD19+ B\": ct_public_lo.b_cell_cd19_positive.name,\n",
+    "    \"CD4+/CD45RO+ Memory\": ct_public_lo.effector_memory_cd45ra_positive_alpha_beta_t_cell_terminally_differentiated.name,\n",
+    "    \"CD8+ Cytotoxic T\": ct_public_lo.cd8_positive_alpha_beta_cytotoxic_t_cell.name,\n",
+    "    \"CD4+/CD25 T Reg\": ct_public_lo.cd4_positive_cd25_positive_alpha_beta_regulatory_t_cell.name,\n",
+    "    \"CD14+ Monocytes\": ct_public_lo.cd14_positive_monocyte.name,\n",
+    "    \"CD56+ NK\": ct_public_lo.cd56_positive_cd161_positive_immature_natural_killer_cell_human.name,\n",
+    "    \"CD8+/CD45RA+ Naive Cytotoxic\": ct_public_lo.cd8_positive_alpha_beta_memory_t_cell_cd45ro_positive.name,\n",
+    "    \"CD34+\": ct_public_lo.cd34_positive_cd56_positive_cd117_positive_common_innate_lymphoid_precursor_human.name\n",
+    "}"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "We can now standardize cell type names using the search-based mapper:"
+    "We can now standardize cell type names using the lookup-based mapper:"
    ]
   },
   {
@@ -476,7 +490,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "lamindb",
    "language": "python",
    "name": "python3"
   },
@@ -490,7 +504,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.17"
+   "version": "3.11.7"
   },
   "nbproject": {
    "id": "ManDYgmftZ8C",