diff --git a/src/ontology/pato-edit.obo b/src/ontology/pato-edit.obo
index 45f96b3e..1fdec83e 100644
--- a/src/ontology/pato-edit.obo
+++ b/src/ontology/pato-edit.obo
@@ -18319,20 +18319,24 @@ creation_date: 2012-12-17T02:16:18Z
 id: PATO:0002418
 name: acidophilic
 def: "An affinity inhering in an anatomical structure by virtue of the bearer exhibiting a molecular interaction for acidic dyes under specific pH conditions." [PATOC:GVG]
+comment: Eosin stains acidophilic structures, hence eosinophilic is the same as acidophilic.
 subset: mpath_slim
 subset: value_slim
+synonym: "eosinophilic" EXACT []
 is_a: PATO:0070045 ! anatomical histological quality
 property_value: http://purl.org/dc/terms/contributor https://orcid.org/0000-0002-2061-091X
 creation_date: 2012-12-17T03:01:19Z
 
 [Term]
 id: PATO:0002419
-name: eosinophilic
-def: "An affinity inhering in an anatomical structure by virtue of the bearer exhibiting a molecular interaction for eosin dye." [PATOC:GVG]
+name: obsolete eosinophilic
+def: "OBSOLETE. An affinity inhering in an anatomical structure by virtue of the bearer exhibiting a molecular interaction for eosin dye." [PATOC:GVG]
+comment: Eosin stains acidophilic structures, hence eosinophilic is the same as acidophilic. See https://github.com/pato-ontology/pato/issues/471
 subset: mpath_slim
 subset: value_slim
-is_a: PATO:0070045 ! anatomical histological quality
 property_value: http://purl.org/dc/terms/contributor https://orcid.org/0000-0002-2061-091X
+is_obsolete: true
+replaced_by: PATO:0002418
 creation_date: 2012-12-17T03:02:09Z
 
 [Term]