Undifferentiated Cell

The undifferentiated cell. The cells are cuboidal in shape and
exhibit a well developed microvillus border. Numerous electron
dense bodies located within menbrane delineated vacuoles occur
scattered spasmodically in the apical region of the cell. The
cytoplasm of the cells contain numerous free ribosomes and a 
well developed Golgi complex. The nucleus is conspicuous. 
Septate desmossomes join the apices of the cells.

NB.  Figure c shows a degenerating cell containing a nucleus
     in a state of atrophy beneath a layer of undifferentiated
     cells.

     bl    =   basal lamina 
     dnu   =   degenerating nucleus
     eb    =   electron dense body 
     gb    =   Golgi body 
      m    =   muscle 
     mv    =   microvillus border
     pc    =   pallial cavity
      r    =   ribosomes
     sd    =   septate desmosome
     nu    =   nucleus

     Scale bar represents 2 micrometers