Centrosome  containing a pair of
   centrioles.

   An  animal  cell  has  a pair of centrioles within its centrosome, the
   region near the nucleus where the cell's microtubules are initiated.

   The  centrioles  are  found at right angles to each other, and each is
   made  up of nine sets of three microtubules. The microtubules are made
   of tubulin subunits.