/* basal_lamina.mdl */

/* The basal lamina surface (book Fig. 4.4A) is a polygon mesh 
that contains 12994 vertices and 25365 triangular mesh elements. 
*/

basal_lamina POLYGON_LIST {    /* This object named "basal_lamina" 
is instantiated in the main mdl file "rat_nmj.main.mdl". */
  VERTEX_LIST {
    [ 1.19325, -0.996566, 0.0742573 ]    /* position 0 in the 
vertex list */
    /* vertices 1 – 12993 omitted */
  }
  ELEMENT_CONNECTIONS {
    [ 0, 3, 2 ]    /* Mesh element 0 */
    /* element connections for mesh elements 1-25364 omitted */
  }
  FULLY_CLOSED = NO
  ADD_EFFECTOR {    /* Add AChE effector sites. */
    STATE = AChE.E    /* Molecule name "AChE.E" refers to state 
"E" within the previously defined "AChE" reaction mechanism. 
*/
    DENSITY = 1800    /* 1800 AChE.E molecules per square micron. 
*/
    ELEMENT = ALL_ELEMENTS    /* Add to all mesh elements. */
    POLE_ORIENTATION = POSITIVE_FRONT    /* Positive pole on front 
face of mesh elements. */
  }
  /* The following two statement blocks make the entire mesh 
transparent (rather than reflective, the default condition) to 
diffusing ACh and Ch molecules. */
  TRANSPARENT { 
    LIGAND = ACh
    ELEMENT = ALL_ELEMENTS    /* To make only part of the mesh 
transparent to ACh molecules, could have specified 
individual mesh elements using their position numbers in the 
element connections list. */
  }
  TRANSPARENT { 
    LIGAND = Ch
    ELEMENT = ALL_ELEMENTS
  }
}