I am having some problems with a blob used in a POV 3.1 animation.
The blob consists of two spheres which are translated from <0,0,0> to
<-.25,0,0> and <+.25,0,0> during the animation.  However, when the
components first begin to separate, some flickering occurs around
their outer edges.  As they are separating, the flickering stops on
the outer edges, but the middle-section where the two components are
connected begins to flicker.  I would appreciate some advice -- I have
precisely no idea what is going on.  The file which I am using is below:

// MITOSIS.POV
// A Diploid undergoes Mitosis
// Zeichner 5/17/2000
// Version 0.1 -- Pov-Ray 3.1

#include "mitosis.inc"

camera {
  location <0,0,-1>
  look_at <0,0,0>
  //rotate 360*clock*y
}

light_source {
  <2,2,-5>
  color rgb 1
}

fog {
  distance 15
  color FogColor
}

>THIS IS THE BLOB WHICH IS FLICKERING
//The Cell
blob {
  threshold .3
  sphere { <0,0,0>, .5, 1 translate From(.5,<0,0,0>) Using("",1,1,"")
To(1,<-.25,0,0>) texture { CellTexA }}
  sphere { <0,0,0>, .5, 1 translate From(.5,<0,0,0>) Using("",1,1,"")
To(1,<.25,0,0>) texture { CellTexB }}
  #if (HollowOn) hollow #end
}

#declare NuTrans = transform { translate 0 scale .15 }

//Parent Cell Nucleus
divnucleus(18,3,rand(seed(10)),NuTrans)
//Parent Organelles
organelles(50,.01,.25,rand(seed(10)),1,0)

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