Immune System Which of the following statements is false regarding B cells? B cells synthesize antibodies and put them on their cell surface B one marrow stem cells migrate to the thymus and develop into B cells B cells can undergo class switching and produce a different antibody type B cells that recognize high concentrations of antigens (self) in the absence of other signals undergo apoptosis in the bone marrow B cells synthesize antibodies and put them on their cell surface B one marrow stem cells migrate to the thymus and develop into B cells B cells can undergo class switching and produce a different antibody type B cells that recognize high concentrations of antigens (self) in the absence of other signals undergo apoptosis in the bone marrow ANSWER DOWNLOAD EXAMIANS APP
Immune System Natural killer cells are involved in 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 allograft rejection ANSWER DOWNLOAD EXAMIANS APP
Immune System Lysozyme is present in sweat Cerebro spinal fluid (CSF) saliva urine sweat Cerebro spinal fluid (CSF) saliva urine ANSWER DOWNLOAD EXAMIANS APP
Immune System CD8 surface antigen is present in both (a) and (b) suppresssor T cells none of these cytotoxic T cells both (a) and (b) suppresssor T cells none of these cytotoxic T cells ANSWER DOWNLOAD EXAMIANS APP
Immune System The role of the M cell is to pass bacteria or virus to underlying macrophages for processing and presentation of antigen trap virus in mucus and prevent entry they use their cilia to propel mucus out of the small intestine induce apoptosis in virus-infected small intestinal epithelia cells pass bacteria or virus to underlying macrophages for processing and presentation of antigen trap virus in mucus and prevent entry they use their cilia to propel mucus out of the small intestine induce apoptosis in virus-infected small intestinal epithelia cells ANSWER DOWNLOAD EXAMIANS APP
Immune System Polymorphonuclear leukocytes (or PMNs) are derived from bone marrow stem cells All of these can be attracted to the site of an infection following activation of complement are a type of phagocyte that can engulf and kill bacteria are derived from bone marrow stem cells All of these can be attracted to the site of an infection following activation of complement are a type of phagocyte that can engulf and kill bacteria ANSWER DOWNLOAD EXAMIANS APP
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