diff --git a/docs/development/03biomaterial.md b/docs/development/03biomaterial.md
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--- a/docs/development/03biomaterial.md
+++ b/docs/development/03biomaterial.md
@@ -7,6 +7,11 @@
 
 ## **GELATIN BASED**
 
+### **GELATIN WITH WOOL**
+
+
+![flowers](../images/biomaterials/gw.jpg){ width=1000 }
+
 ### **GELATIN WITH POTATO STARCH**
 
 ![flowers](../images/biomaterials/ps.jpg){ width=1000 }
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