diff --git a/ancillaries/blacklist.txt b/ancillaries/blacklist.txt
index 97781bfff5c02c826c5552f7891a4f50b972e5c4..0cf50a426754bbf2c5a3754d28cd8be38e420321 100644
--- a/ancillaries/blacklist.txt
+++ b/ancillaries/blacklist.txt
@@ -70,6 +70,8 @@ in vitro
 in vivo
 iv secretion system
 light - harvesting antenna
+leaf vein
+leaf veins
 margin
 margins
 media
diff --git a/ancillaries/blacklisted-heads.txt b/ancillaries/blacklisted-heads.txt
index fdb851be876451b6e8742198688ee2463395132c..f05f0899a98fae58768d012e9a0455bfbd1ae8a4 100644
--- a/ancillaries/blacklisted-heads.txt
+++ b/ancillaries/blacklisted-heads.txt
@@ -1,9 +1,15 @@
+adult
+adults
 axes
 axis
+bar
+bars
 basin
 basins
 bed
 beds
+box
+boxes
 cap
 caps
 chamber
@@ -37,8 +43,12 @@ drop
 drops
 film
 films
+flat
+flats
 floor
 floors
+formula
+formulas
 gel
 gels
 green
@@ -66,8 +76,12 @@ mix
 mixes
 mixture
 mixtures
+note
+notes
 pen
 pens
+plaque
+plaques
 pocket
 pockets
 pool
@@ -86,6 +100,9 @@ salt
 salts
 sediment
 sediments
+serum
+serums
+sera
 sheet
 sheets
 side
diff --git a/ancillaries/blacklisted-phenotype-heads.txt b/ancillaries/blacklisted-phenotype-heads.txt
index 2b3376b5d637666cd6936101a6604cffb2a8c1b3..926c0a5f882436919044a3b695d25cc07a8a9c3f 100644
--- a/ancillaries/blacklisted-phenotype-heads.txt
+++ b/ancillaries/blacklisted-phenotype-heads.txt
@@ -265,3 +265,8 @@ variable
 Variable
 variables
 Variables
+resistant
+resistance
+susceptible
+susceptibility
+susceptibilities
\ No newline at end of file
diff --git a/plans/tomap-habitats.plan b/plans/tomap-habitats.plan
index da458fd1932cceace194e9cae09134bd2bf10027..9cfbe63267e82c9467feb148a8ce8a1fbba65fc6 100644
--- a/plans/tomap-habitats.plan
+++ b/plans/tomap-habitats.plan
@@ -361,13 +361,6 @@
       <action>remove:habitats</action>
       <removeFromLayer/>
     </disambiguate-nodule>
-
-    <!-- serum : choose "blood serum" by default -->
-    <disambiguate-serum class="Action">
-      <target>documents.sections.layer:habitats[@head-string == "serum" and not @score == 1 and not @concept-id == "OBT:000524"]</target>
-      <action>remove:habitats</action>
-      <removeFromLayer/>
-    </disambiguate-serum>
    
   </disambiguation-rules>