diff --git a/data/leaves/mygrowingleaf.xml b/data/leaves/mygrowingleaf.xml
new file mode 100644
--- /dev/null
+++ b/data/leaves/mygrowingleaf.xml
@@ -0,0 +1,1268 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<leaf name="/ufs/guravage/.archive/mas/vleaf/protocols/data/leaves/domain.xml" date="Fri Aug 26 18:51:37 2011" simtime="1830">
+  <parameter>
+    <par name="arrowcolor" val="white"/>
+    <par name="arrowsize" val="10"/>
+    <par name="textcolor" val="red"/>
+    <par name="cellnumsize" val="1"/>
+    <par name="nodenumsize" val="1"/>
+    <par name="node_mag" val="1"/>
+    <par name="outlinewidth" val="1"/>
+    <par name="cell_outline_color" val="forestgreen"/>
+    <par name="resize_stride" val="10"/>
+    <par name="export_interval" val="0"/>
+    <par name="export_fn_prefix" val="cell."/>
+    <par name="storage_stride" val="100"/>
+    <par name="xml_storage_stride" val="500"/>
+    <par name="datadir" val="auxin_growth"/>
+    <par name="T" val="1"/>
+    <par name="lambda_length" val="100"/>
+    <par name="yielding_threshold" val="4"/>
+    <par name="lambda_celllength" val="0"/>
+    <par name="target_length" val="60"/>
+    <par name="cell_expansion_rate" val="10"/>
+    <par name="cell_div_expansion_rate" val="10"/>
+    <par name="auxin_dependent_growth" val="true"/>
+    <par name="ode_accuracy" val="0.0001"/>
+    <par name="mc_stepsize" val="0.4"/>
+    <par name="mc_cell_stepsize" val="0.2"/>
+    <par name="energy_threshold" val="1000"/>
+    <par name="bend_lambda" val="0"/>
+    <par name="alignment_lambda" val="0"/>
+    <par name="rel_cell_div_threshold" val="2"/>
+    <par name="rel_perimeter_stiffness" val="2"/>
+    <par name="collapse_node_threshold" val="0.05"/>
+    <par name="morphogen_div_threshold" val="0.2"/>
+    <par name="morphogen_expansion_threshold" val="0.01"/>
+    <par name="copy_wall" val="true"/>
+    <par name="source" val="0"/>
+    <par name="D">
+      <valarray>
+        <val v="0"/>
+        <val v="0.002"/>
+        <val v="0.018"/>
+        <val v="0.02"/>
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+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </valarray>
+    </par>
+    <par name="initval">
+      <valarray>
+        <val v="0.001"/>
+        <val v="0.001"/>
+        <val v="0.001"/>
+        <val v="0.001"/>
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+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
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+        <val v="0"/>
+      </valarray>
+    </par>
+    <par name="k1" val="1"/>
+    <par name="k2" val="0.3"/>
+    <par name="r" val="1"/>
+    <par name="kr" val="1"/>
+    <par name="km" val="1"/>
+    <par name="Pi_tot" val="1"/>
+    <par name="transport" val="0.36"/>
+    <par name="ka" val="1"/>
+    <par name="pin_prod" val="0"/>
+    <par name="pin_prod_in_epidermis" val="0"/>
+    <par name="pin_breakdown" val="0"/>
+    <par name="pin_breakdown_internal" val="0.001"/>
+    <par name="aux1prod" val="0.001"/>
+    <par name="aux1prodmeso" val="0"/>
+    <par name="aux1decay" val="0.001"/>
+    <par name="aux1decaymeso" val="0.1"/>
+    <par name="aux1transport" val="0.036"/>
+    <par name="aux_cons" val="0"/>
+    <par name="aux_breakdown" val="0.0001"/>
+    <par name="kaux1" val="1"/>
+    <par name="kap" val="1"/>
+    <par name="leaf_tip_source" val="0.0001"/>
+    <par name="sam_efflux" val="0.0001"/>
+    <par name="sam_auxin" val="10"/>
+    <par name="sam_auxin_breakdown" val="0"/>
+    <par name="van3prod" val="0.002"/>
+    <par name="van3autokat" val="0.1"/>
+    <par name="van3sat" val="10"/>
+    <par name="k2van3" val="0.3"/>
+    <par name="dt" val="0.1"/>
+    <par name="rd_dt" val="10"/>
+    <par name="movie" val="true"/>
+    <par name="nit" val="100000"/>
+    <par name="maxt" val="1e+06"/>
+    <par name="rseed" val="-1"/>
+    <par name="constituous_expansion_limit" val="16"/>
+    <par name="vessel_inh_level" val="1"/>
+    <par name="vessel_expansion_rate" val="0.25"/>
+    <par name="d" val="0.002"/>
+    <par name="e" val="0.1"/>
+    <par name="f" val="10"/>
+    <par name="c" val="0.004"/>
+    <par name="mu" val="0.12"/>
+    <par name="nu" val="0.04"/>
+    <par name="rho0" val="0.03"/>
+    <par name="rho1" val="0.0003"/>
+    <par name="c0" val="0.02"/>
+    <par name="gamma" val="0.02"/>
+    <par name="eps" val="0.4"/>
+    <par name="k">
+      <valarray>
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+    </par>
+    <par name="i1" val="0"/>
+    <par name="i2" val="0"/>
+    <par name="i3" val="0"/>
+    <par name="i4" val="0"/>
+    <par name="i5" val="0"/>
+    <par name="s1" val=""/>
+    <par name="s2" val=""/>
+    <par name="s3" val=""/>
+    <par name="b1" val="false"/>
+    <par name="b2" val="false"/>
+    <par name="b3" val="false"/>
+    <par name="b4" val="false"/>
+    <par name="dir1" val="."/>
+    <par name="dir2" val="."/>
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+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters2>
+    </wall>
+    <wall index="39" c1="7" c2="14" n1="67" n2="68" length="19.9809" viz_flux="0" wall_type="normal">
+      <transporters1>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters1>
+      <transporters2>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters2>
+    </wall>
+    <wall index="19" c1="0" c2="14" n1="68" n2="37" length="16.2427" viz_flux="0" wall_type="normal">
+      <transporters1>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters1>
+      <transporters2>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters2>
+    </wall>
+    <wall index="0" c1="14" c2="12" n1="67" n2="6" length="9.0329" viz_flux="0" wall_type="normal">
+      <transporters1>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters1>
+      <transporters2>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters2>
+    </wall>
+    <wall index="18" c1="14" c2="-1" n1="6" n2="37" length="34.2111" viz_flux="0" wall_type="normal">
+      <transporters1>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters1>
+      <transporters2>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters2>
+    </wall>
+    <wall index="42" c1="3" c2="15" n1="71" n2="72" length="25.0919" viz_flux="0" wall_type="normal">
+      <transporters1>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters1>
+      <transporters2>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters2>
+    </wall>
+    <wall index="23" c1="0" c2="15" n1="22" n2="49" length="17.5703" viz_flux="0" wall_type="normal">
+      <transporters1>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters1>
+      <transporters2>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters2>
+    </wall>
+    <wall index="40" c1="9" c2="15" n1="49" n2="71" length="14.1113" viz_flux="0" wall_type="normal">
+      <transporters1>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters1>
+      <transporters2>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters2>
+    </wall>
+    <wall index="41" c1="15" c2="-1" n1="22" n2="72" length="21.9956" viz_flux="0" wall_type="normal">
+      <transporters1>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters1>
+      <transporters2>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+        <val v="0"/>
+      </transporters2>
+    </wall>
+  </walls>
+  <nodesets n="0"/>
+  <settings>
+    <setting name="show_cell_centers" val="false"/>
+    <setting name="show_nodes" val="false"/>
+    <setting name="show_node_numbers" val="false"/>
+    <setting name="show_cell_numbers" val="false"/>
+    <setting name="show_border_cells" val="false"/>
+    <setting name="show_cell_axes" val="false"/>
+    <setting name="show_cell_strain" val="false"/>
+    <setting name="show_fluxes" val="true"/>
+    <setting name="show_walls" val="true"/>
+    <setting name="save_movie_frames" val="false"/>
+    <setting name="show_only_leaf_boundary" val="false"/>
+    <setting name="cell_growth" val="true"/>
+    <setting name="hide_cells" val="false"/>
+    <viewport m11="1.5625" m12="0" m21="0" m22="1.5625" dx="0" dy="0"/>
+  </settings>
+</leaf>
diff --git a/src/protocols/MyDiffusionModel/mydiffusionmodel.cpp b/src/protocols/MyDiffusionModel/mydiffusionmodel.cpp
--- a/src/protocols/MyDiffusionModel/mydiffusionmodel.cpp
+++ b/src/protocols/MyDiffusionModel/mydiffusionmodel.cpp
@@ -31,7 +31,7 @@
 
 QString Mydiffusionmodel::ModelID(void) {
   // specify the name of your model here
-  return QString( "Fick's Laws of diffusion" );
+  return QString( "Diffusion in a growing domain" );
 }
 
 // return the number of chemicals your model uses
@@ -54,10 +54,8 @@ void Mydiffusionmodel::SetCellColor(Cell
 void Mydiffusionmodel::CellHouseKeeping(CellBase *c) {
   // add cell behavioral rules here
 
-  if (c->Chemical(0) < 0.5){
-    c->EnlargeTargetArea(par->cell_expansion_rate);
-  }
-
+  c->EnlargeTargetArea(par->cell_expansion_rate);
+  
   if(c->Area() > 2*c->BaseArea()){
     c->Divide();
   }
diff --git a/src/protocols/MyDiffusionModel/mydiffusionmodel.h b/src/protocols/MyDiffusionModel/mydiffusionmodel.h
--- a/src/protocols/MyDiffusionModel/mydiffusionmodel.h
+++ b/src/protocols/MyDiffusionModel/mydiffusionmodel.h
@@ -56,7 +56,7 @@ public:
 	virtual int NChem(void);
 
 	// Name the default leaf file
-	virtual QString DefaultLeafML (void){return QString("myleaf.xml");}
+	virtual QString DefaultLeafML (void){return QString("mygrowingleaf.xml");}
 };
 
 // finis