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11 Cards in this Set
- Front
- Back
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What are T-cell antigen receptors? |
T cell antigen receptors present in lymphocytes found in the plasma membranes of T cells – made of two polypeptides chains – that binds to antigen-MHC complex. |
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What are different antigen presenting cells? |
Antigen presenting cells can engulf antigens and then present their fragments to immune cells |
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What are opsonins? |
Opsonins are complements and antibodies that cover surface pathogens,making it easy for phagocytes to bind and engulf pathogens |
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What are cytokines? |
Cytokines are chemical messengers produced by cells of the immune system |
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What are naïve lymphocytes? |
Lymphocytes that have never been exposed to antigens |
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What is margination with reference to white blood cells? |
Margination refers to clinging of white blood cells tightly to endothelial cells. |
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What is diapedesis? |
Diapedesis refers to the squeezing of white blood cells between endothelial wall of capillaries |
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What are antigens? |
Antigens are substances that can mobilize specific immunity. |
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What is a hapten? |
A hapten is a small simple foreign molecule that can cannot mobilize immune system or produce antibody |
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What is somatic recombination? |
Somatic recombination is referred to reshuffling of gene segments to combine them in different combinations to produce different gene products. |
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What is a clone? |
Army of same ancestral cells produced by cell division |
