  The temperature and density dependence of the relaxation times, thermal
conductivity, shear viscosity and bulk viscosity for a hot and dense gas
consisting of pions, kaons and nucleons have been evaluated in the kinetic
theory approach. The in-medium cross-sections for $\pi\pi$, $\pi K$ and $\pi N$
scatterings were obtained by using complete propagators for the exchanged
$\rho$, $\sigma$, $K^*$ and $\Delta$ excitations derived using thermal field
theoretic techniques. Notable deviations can be observed in the temperature
dependence of $\eta$, $\zeta$ and $\lambda$ when compared with corresponding
calculations using vacuum cross-sections usually employed in the literature.
The value of the specific shear viscosity $\eta/s$ is found to be in agreement
with available estimates.
