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Phagocyte
Type of White Blood cell which carries out phagocytosis.
Found in blood and tissues
First cell to respond to an immune system trigger in the body
Phagocytosis
the engulfment of pathogens
B-cell or B-Lymphocyte
Type of White blood cell
Covered with antibody-protiens that bind to antigens to form an antigen-antibody complex
T-cell or T-lymphocyte
Type of white blood cell
Has receptor proteins on its surface which bind to complementary antigens presented to it by phagocytes
Plasma cells
Clones of B-cells
the secrete loads of antibodies specific to the antigen
the bind to antigens on the surface of the pathogen to form lots of antigen-antibody complexes
Antibodies
protein made of chains of amino acids
the specificity of an antibody depends on its variable regions which form the antigen binding sites, each with a variable region with a unique tertiary shape that is complementary to one specific antigen
all antibodies have the same constant region