Immune System Which of the following(s) is/are the determinants of antigenicity? Size of the antigen All of these Foreignness Chemical nature Size of the antigen All of these Foreignness Chemical nature ANSWER DOWNLOAD EXAMIANS APP
Immune System Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated? Both (a) and (b) By rearrangements of the DNA encoding the variable regions of the heavy and light chains By the combination of different heavy and light chains that form the antigen binding site Antibody proteins can physically change their shape to bind different epitopes Both (a) and (b) By rearrangements of the DNA encoding the variable regions of the heavy and light chains By the combination of different heavy and light chains that form the antigen binding site Antibody proteins can physically change their shape to bind different epitopes ANSWER DOWNLOAD EXAMIANS APP
Immune System Polymorphonuclear leukocytes (or PMNs) are derived from bone marrow stem cells All of these are a type of phagocyte that can engulf and kill bacteria can be attracted to the site of an infection following activation of complement are derived from bone marrow stem cells All of these are a type of phagocyte that can engulf and kill bacteria can be attracted to the site of an infection following activation of complement ANSWER DOWNLOAD EXAMIANS APP
Immune System Natural killer cells are involved in allograft rejection tumour rejection all of these non-specific killing of virus transformed target cells allograft rejection tumour rejection all of these non-specific killing of virus transformed target cells ANSWER DOWNLOAD EXAMIANS APP
Immune System T cell receptors (or TCR) on CD4+ T cells are secreted out into the environment to bind antigens recognize peptides associated with MHC class II molecules recognize peptides not associated with MHC molecules recognize peptides associated with MHC class I molecules are secreted out into the environment to bind antigens recognize peptides associated with MHC class II molecules recognize peptides not associated with MHC molecules recognize peptides associated with MHC class I molecules ANSWER DOWNLOAD EXAMIANS APP
Immune System Treatment with bacterial endotoxins results blast formation in T cells none of these B cells monocytes T cells none of these B cells monocytes ANSWER DOWNLOAD EXAMIANS APP
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