  Meson-Baryon Interactions can be successfully described using both Chiral
Symmetry and Unitarity. The $s-$wave meson-baryon scattering amplitude is
analyzed in a Bethe-Salpeter coupled channel formalism incorporating Chiral
Symmetry in the potential. Two body coupled channel unitarity is exactly
preserved. The needed two particle irreducible matrix amplitude is taken from
lowest order Chiral Perturbation Theory in a relativistic formalism. Off-shell
behavior is parameterized in terms of low energy constants. The relation to the
heavy baryon limit is discussed. The position of the complex poles in the
second Riemann sheet of the scattering amplitude determine masses and widths
baryonic resonances of the N(1535), N(1670), $\Lambda (1405)$ and
$\Lambda(1670)$ resonances which compare well with accepted numbers.
