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blocking the antigen receptors on the surface of lymphocytes would interfere with

antigen recognition

in order for a lymphocyte to respond to an antigen, the antigen must

bind to specific receptors on the lymphocyte membrane

immunoglobulins that are the largest class and are mainly responsible for resistance against viruses, bacteria, and bacterial toxins are

IgG

the major histocompatibility complex

is a group of genes that codes for human leukocyte antigens

the red pulp of the spleen contains large numbers of

macrophages

the specificity of an antibody is determined by the

variable region

anatomically, lymph vessels resemble

veins

areas of the spleen that contain large numbers of lymphoid nodules are known as

white pulp

the cells responsible for humoral immunity are the

B cells

histamine increases blood flow and vascular permeability. this would account for which of the following changes that occur during inflammation

all of these

the binding of an antigen to an antibody can result in

all of these

the thoracic duct drains lymph from

all of these

in general, lymphocytes

do all of these

an inflammatory response is triggered when

mast ells release histamine, serotonin, and heparin

lymph nodes

monitor the contents of lymph by removing debris and pathogens and act as a check station for cancer cells only

immunity that results from antibodies that pass the placenta from mother to fetus is called

passive natural

the cells responsible for the production of circulating antibodies are

plasma cells

the largest collection of lymphatic tissue in the adult body is located in the

spleen

in active artificial immunity,

the body is deliberately exposed to an antigen

stem cells that will form T cells are modified in the

thymus


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