NURP 503 Exam 4 (SOLVED!)

What are the antigens and antibodies to know for HBV infection? correct answers Antigen and Antibodies S= surface C= core E= nucleocapsid protein HBsAG= proteins on the surface of the cell Anti-HBs= antibodies on surface of the cell HBcAG= proteins in core of cell Anti-HBc= antibodies in core of cell HBeAG= nucleocapsid protein Anti-HBe= antibodies What does it mean to have surface antigens or antibodies? HBsAG or Anti-HBs correct answers HBsAG= positive during acute OR chronic infection Indicates pt is infectious Body eventually produces antibodies against Anti-HBs= Indicates recovery/immunity Develops after successful immunization What does it mean to have core antigens or antibodies? HBcAG or Anti-HBc correct answers HBcAG= + with + IgM= recent/acute infection of HB (less than or equal to 6 months Acute Infection Anti-HBc= Previous or ongoing infection Present at onset of sx in acute infection and persists for life When will you see Anti-HBe? correct answers Will develop with chronic HBV infection Which lab test indicates chronic HBV infection? correct answers Core antibody positive (Anti-HBc) What is natural immunity? correct answers Immunity to infection regardless of previous exposure Composed of polymorphonuclear leukocytes (PMNs), phagocytic cells, complement What is acquired/adaptive immunity? correct answers Highly specific response From exposure or vaccine