Immune System Macrophages are professional antigen- presenting cells. The protein molecule through which they present antigen in human is CD8 interleukin actin HLA CD8 interleukin actin HLA ANSWER DOWNLOAD EXAMIANS APP
Immune System Which of the following expresses CD3 surface antigen? Granulocytes T cells B cells Monocytes Granulocytes T cells B cells Monocytes ANSWER DOWNLOAD EXAMIANS APP
Immune System Polymorphonuclear leukocytes (or PMNs) 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 are derived from bone marrow stem cells All of these are a type of phagocyte that can engulf and kill bacteria ANSWER DOWNLOAD EXAMIANS APP
Immune System CD8 surface antigen is present in none of these cytotoxic T cells both (a) and (b) suppresssor T cells none of these cytotoxic T cells both (a) and (b) suppresssor T cells ANSWER DOWNLOAD EXAMIANS APP
Immune System Which of the following is correct for CD8 T cells? CD8 T cells only recognize virus-infected cells In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only CD8 T cells can kill individual virus-infected cells in a contact dependent fashion CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells CD8 T cells only recognize virus-infected cells In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only CD8 T cells can kill individual virus-infected cells in a contact dependent fashion CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells ANSWER DOWNLOAD EXAMIANS APP
Immune System The role of the M cell is to they use their cilia to propel mucus out of the small intestine induce apoptosis in virus-infected small intestinal epithelia cells trap virus in mucus and prevent entry pass bacteria or virus to underlying macrophages for processing and presentation of antigen they use their cilia to propel mucus out of the small intestine induce apoptosis in virus-infected small intestinal epithelia cells trap virus in mucus and prevent entry pass bacteria or virus to underlying macrophages for processing and presentation of antigen ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS