  Obukhov spin-driven inflation in General Relativity is extended to include
inflaton fields.A de Sitter phase solution is obtained and new slow-rolling
conditions for the spin potential are obtained.The spin potential reduces to
Obukhov result at the present epoch of the Universe where the spin density is
low with comparison to the Early Universe spin densities.A relation betwenn the
spin density energy and the temperature fluctuation can be obtained which allow
us to determine the spin density energy in terms of the COBE data for
temperature fluctuations.
