Anonymous asked in Science & MathematicsBiology · 1 decade ago

are the cytokines part of innate immunity?

are innate immunity regulated?

and lastly, lymphoid organs are involved in the adaptive immunity not innate right??


LASTLY.. i believe that innate immunity doesnt recognise microbes by antigens, but rather their structures?

2 Answers

  • 1 decade ago
    Favorite Answer

    Cytokines are a part of Innate immunity. Upon recognition of a foreign invader, the NK cells of the innate immune system responds by destroying them and further releases cytokines and chemokines which recruit other cells such as macrophages and granulocytes for a cooperative defensive mechanism which results in inflammation. Following innate immune responses the T and B lymphocytes mediates an adaptive immune response which has the capability to recognize specific antigens and mediate a more effective mechanism to eliminate the foreign invader.

    Yes Innate immune system is highly regulated. The invasion of a foriegn pathogen sends a signal that starts a cascade of events and signals to mediate appropriate first defense immunity.

    The lymphatic system in vertebrates is a network of conduits that carry a clear fluid called lymph. It also includes the lymphoid tissue through which the lymph travels. Lymphoid tissue is found in many organs, particularly the lymph nodes, and in the lymphoid follicles associated with the digestive system such as the tonsils. The system also includes all the structures dedicated to the circulation and production of lymphocytes, which includes the spleen, thymus, bone marrow and the lymphoid tissue associated with the digestive system.

    No when u look at it deep, all organs are involved with innate and adaptive. After all in the bone marrow Haematopoietic stem cells (HSC) gives rise to all immune cells including the innate and adaptive immune cells. So depending on the infection, the cell division can be regulated in each organ.

    LASTLY .... No they are recognized by receptors on the surface of the pathogen. In innate immunity Pathogen recognized by receptors encoded in the germline. while in adaptive its Pathogen recognized by receptors generated randomly.

    Also in innate immunity, Receptors have broad specificity, i.e., recognize many related molecular structures called PAMPs (pathogen-associated molecular patterns) while in adaptive Receptors have very narrow specificity; i.e., recognize a particular epitope.

    etc etc.

    Source(s): PhD candidate in Stem cell biology and Immunology
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  • Susan
    Lv 4
    4 years ago

    b. dependent exclusively on cell-mediated responses

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