B cell receptor Antigen on bactenum a cll CD4 MHCI Helper T cel Cytokines T cell receptor Momory E cells Plasma cells Figure 17.17 After initially binding an antigen to the B cell receptor, a B cell internalizes the antigen and presents it on MHC class II. A helper T cell recognizes the MHC class Il- antigen complex and activates the B cell. As a result, memory B cells and plasma cells are made. The Rh antigen is found on Rh-positive red blood cells. An Rh-negative female can usually carry an Rh- positive fetus to term without difficulty. However, if she has a second Rh-positive fetus, her body may launch an immune attack that causes hemolytic disease of the newborn. Why do you think hemolytic disease is only a problem during the second or subsequent pregnancies?
B cell receptor Antigen on bactenum a cll CD4 MHCI Helper T cel Cytokines T cell receptor Momory E cells Plasma cells Figure 17.17 After initially binding an antigen to the B cell receptor, a B cell internalizes the antigen and presents it on MHC class II. A helper T cell recognizes the MHC class Il- antigen complex and activates the B cell. As a result, memory B cells and plasma cells are made. The Rh antigen is found on Rh-positive red blood cells. An Rh-negative female can usually carry an Rh- positive fetus to term without difficulty. However, if she has a second Rh-positive fetus, her body may launch an immune attack that causes hemolytic disease of the newborn. Why do you think hemolytic disease is only a problem during the second or subsequent pregnancies?
Chapter16: Antifungal, Antiviral, And Immunizing Agents
Section: Chapter Questions
Problem 21RQ
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Figure 17.17 The Rh antigen is found on Rh-positive red blood cells. An Rh-negative female can usually carry an Rh-positive fetus to term without difficulty. However, if she has a second Rh-positive fetus, her body may launch an immune attack that causes hemolytic disease of the newborn. Why do you think hemolytic disease is only a problem during the second or subsequent pregnancies?
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