immunologylab.docx - Contents Introduction.2 The Importance...

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ContentsIntroduction;.................................................................................2The Importance of Progesterone During Pregnancy;..................3The Importance of Cytokines During Pregnancy;.......................4The Importance of Placenta During Pregnancy;..........................5Conclusion;..................................................................................6References;...................................................................................71
Introduction;Immunity is a state of resistance of an organism to invadingbiotic or abiotic pathogens and their harmful effects thatprevents the development of infection and maintains organism'sintegrity by counter acing, neutralizing, and clearing pathogens.In a pregnant woman the fetus blood type might be differentfrom the mother blood type which collectively the motherimmune system should produce antibody against the fetus blood,but the reaction between antibody of mother and antigen of fetuswill not happen! because embryo implantation sets off a processthat ultimately turns off a key pathway required for the immunesystem to attack foreign bodies. As a result, immune cells arenever recruited to the site of implantation and therefore cannotharm the developing fetus.During pregnancy, the foreign antigens of the developing fetusand the placenta come into direct contact with cells of thematernal immune system, but fail to evoke the typical tissuerejection response seen with organ transplants.In fact the T cells usually will attack the fetus because it’s aforeign and strange to T cell ,so maybe there is some barrier andmembrane which protect the fetus from the mother antibody, andthe fetus is safe maybe because it surrounded by Decidua (is the

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