Abstract. Relations of immune tolerance between mother and fetus are considered in view of a common regulatory continuum which is formed under the influence of a growing fetus. To explain such an immune tolerance. a notion of immune system plasticity is introduced. https://www.hindigyanvishv.com/hot-find-Facia-Installation-Kit-Suits-Holden-Commodore-VE-Series-2-FP9550BK-Black-top-mega/