diff --git a/lvl-project/lvl-bundle/src/main/ui/js/apps/collection/submit/collection_submit_view.js b/lvl-project/lvl-bundle/src/main/ui/js/apps/collection/submit/collection_submit_view.js
index b43285a9..4f92b0a5 100644
--- a/lvl-project/lvl-bundle/src/main/ui/js/apps/collection/submit/collection_submit_view.js
+++ b/lvl-project/lvl-bundle/src/main/ui/js/apps/collection/submit/collection_submit_view.js
@@ -161,8 +161,8 @@ define([ 'app', 'tpl!apps/collection/submit/tpls/collection_submit', 'chance', '
 											message : 'The origin is required to be a minimum of 60 characters in length'
 										},
 										regexp: {
-					                        regexp: /^[ACTG]+$/i,
-					                        message: 'The origin can consist of A, C, T and G only'
+					                        regexp: /^[ACTGN\-]+$/i,
+					                        message: 'The origin can consist of A, C, T, G, N and - only'
 					                    }
 									}
 								},
diff --git a/lvl-project/lvl-bundle/src/main/ui/js/apps/header/show/tpls/header_workspace.html b/lvl-project/lvl-bundle/src/main/ui/js/apps/header/show/tpls/header_workspace.html
index bd31c810..89cd8908 100644
--- a/lvl-project/lvl-bundle/src/main/ui/js/apps/header/show/tpls/header_workspace.html
+++ b/lvl-project/lvl-bundle/src/main/ui/js/apps/header/show/tpls/header_workspace.html
@@ -62,6 +62,11 @@
 								<span class="input-group-addon"><a href="#" class="text-muted lvl-btn-close" id="lvl-search-form-collapse-btn" title="Close"><i class="fa fa-times-circle fa-fw"></i></a></span>
 							</div>
 						</div>
+						<div id="lvl-advanced-search-container" class="form-group hidden">
+               				<ul class="list-inline">
+               					<li><a href="#" id="lvl-advanced-search-btn"><i class="fa fa-binoculars"></i> Advanced search</a></li>
+               				</ul>
+                  		</div>
 					</fieldset>
 				</form>
 			</div>
diff --git a/lvl-project/lvl-storage/src/main/java/eu/eubrazilcc/lvl/storage/security/BaseSecurityManager.java b/lvl-project/lvl-storage/src/main/java/eu/eubrazilcc/lvl/storage/security/BaseSecurityManager.java
index 577ad63c..5de6ab17 100644
--- a/lvl-project/lvl-storage/src/main/java/eu/eubrazilcc/lvl/storage/security/BaseSecurityManager.java
+++ b/lvl-project/lvl-storage/src/main/java/eu/eubrazilcc/lvl/storage/security/BaseSecurityManager.java
@@ -25,7 +25,9 @@
 import static eu.eubrazilcc.lvl.storage.oauth2.dao.ResourceOwnerDAO.RESOURCE_OWNER_DAO;
 import static eu.eubrazilcc.lvl.storage.security.el.PermissionElBuilder.EL_PARAMETER_PATTERN;
 import static eu.eubrazilcc.lvl.storage.security.el.PermissionElBuilder.buildPermission;
+import static org.slf4j.LoggerFactory.getLogger;
 
+import java.util.Arrays;
 import java.util.Collection;
 
 import javax.annotation.Nullable;
@@ -34,6 +36,7 @@
 import org.apache.shiro.subject.Subject;
 
 import eu.eubrazilcc.lvl.storage.oauth2.ResourceOwner;
+import eu.eubrazilcc.lvl.storage.oauth2.security.OAuth2SecurityManager;
 import eu.eubrazilcc.lvl.storage.security.shiro.AccessTokenToken;
 
 /**
diff --git a/lvl-project/lvl-storage/src/test/java/eu/eubrazilcc/lvl/storage/SecurityManagerTest.java b/lvl-project/lvl-storage/src/test/java/eu/eubrazilcc/lvl/storage/SecurityManagerTest.java
index 01cc70d8..5b2d91f8 100644
--- a/lvl-project/lvl-storage/src/test/java/eu/eubrazilcc/lvl/storage/SecurityManagerTest.java
+++ b/lvl-project/lvl-storage/src/test/java/eu/eubrazilcc/lvl/storage/SecurityManagerTest.java
@@ -194,6 +194,7 @@ public void test01AuthX() {
 			assertThat("expected role is present", currentUser.hasRole("user"), equalTo(true));
 			assertThat("unexpected role is not present", currentUser.hasRole("admin"), equalTo(false));
 			assertThat("expected permission is present", currentUser.isPermitted("sequences:leishmania:public:item1:view"), equalTo(true));
+			assertThat("expected permission is present", currentUser.isPermitted("samples:leishmania:public:item1:view"), equalTo(true));
 			assertThat("expected permissions are present", currentUser.isPermittedAll("sequences:sandflies:meremortal@lvl:*:create", "sequences:sandflies:meremortal@lvl:item34:edit"), equalTo(true));
 			assertThat("expected permissions (using EL expressions) are present", currentUser
 					.isPermittedAll("sequences:sandflies:" + OWNERID_EL_TEMPLATE + ":*:create", "sequences:sandflies:" + OWNERID_EL_TEMPLATE + ":item34:edit"), equalTo(true));
@@ -221,6 +222,7 @@ public void test01AuthX() {
 			assertThat("expected role is present", currentUser.hasRole("user"), equalTo(true));
 			assertThat("unexpected role is not present", currentUser.hasRole("admin"), equalTo(false));
 			assertThat("expected permission is present", currentUser.isPermitted("sequences:leishmania:public:item1:view"), equalTo(true));
+			assertThat("expected permission is present", currentUser.isPermitted("samples:leishmania:public:item1:view"), equalTo(true));
 			assertThat("expected permissions are present", currentUser.isPermittedAll("sequences:sandflies:meremortal@lvl:*:create", "sequences:sandflies:meremortal@lvl:item34:edit"), equalTo(true));
 			assertThat("unexpected permission is not present", currentUser.isPermitted("sequences:sandflies:meremortal2@lvl:item1:view"), equalTo(false));
 			assertThat("unexpected permissions are not present", currentUser.isPermittedAll("lightsaber:weild"), equalTo(false));
@@ -307,6 +309,11 @@ public void test02Permissions() {
 					currentUser.isPermitted("sequences:*:public:*:view"), equalTo(true));
 			assertThat("User own sequences are fully accessible from user profile", 
 					currentUser.isPermittedAll("sequences:*:" + meremortalOwnerid + ":*:view,edit,create"), equalTo(true));
+			
+			assertThat("Public samples are accessible for reading from user profile", 
+					currentUser.isPermitted("samples:*:public:*:view"), equalTo(true));
+			assertThat("Public sandfly samples are accessible for reading from user profile", 
+					currentUser.isPermitted("samples:sandflies:public:*:view"), equalTo(true));
 
 			assertThat("Publications are not accessible for reading from user profile", 
 					currentUser.isPermitted("citations:*:*:*:view"), equalTo(false));