It is significant that the blood system of a pregnant woman is separate from that of the fetus in her womb; their blood types are often different.
جالب است که دستگاه گردش خون زن باردار از دستگاه گردش خون جنین درون رحمش مجزاست ؛‏ گروه خونی آنان غالباً یکی نیست .‏