  We extend the study of hadron yield correlation in combination models in a
recent publication to baryon-anti-baryon flavor correlations in heavy ion
collisions. We show that the universal behaviors of the anti-baryon to baryon
yield ratios as functions of that of $K^-$ to $K^+$ are naturally explained. We
study also the "mixed ratios" and propose other measurements that might be
sensitive to the hadronization mechanism.
