7 responses

  1. zezo
    October 25, 2010

    رائع

    Reply

  2. Hi
    July 23, 2013

    Now I understand! Thank you!

    Reply

  3. Dr umar
    February 25, 2014

    satisfied

    Reply

  4. daniel
    August 17, 2015

    Thank you very much, you have blessed me with this piece of information

    Reply

  5. Aron
    November 14, 2015

    Well.I get it now.Though i didn’t understand why the placenta is called the “bond”.

    Reply

  6. Peace Semekor f
    December 15, 2015

    Thanks so much very useful I know understand better

    Reply

  7. Sornavel k
    March 9, 2018

    Wonderful explanation

    Reply

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