  We calculate neutrino and antineutrino scattering off electrons and nucleons
in supernovae using a detailed Monte Carlo transport code incorporating
realistic equations of state. The goal is to determine whether particles in a
neutron star core, partially spin-aligned by the local magnetic field, can give
rise to asymmetric neutrino emission via the standard parity breaking weak
force. We conclude that electron scattering in a very high magnetic field does
indeed give a net asymmetry, but that nucleon scattering, if present, removes
the asymmetry.
