MICROBIOLOGY: FUNDAMENTALS CONNECT AC
MICROBIOLOGY: FUNDAMENTALS CONNECT AC
3rd Edition
ISBN: 9781264669769
Author: Cowan
Publisher: MCG
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Chapter 14, Problem 2Q

Can you think of a reason why humans have evolved to mount an immune response to their own fetuses if they have a particular set of foreign antigens (as in the case of erythroblastosis fetalis)?

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Some primitive organisms, such as invertebrates, have no lymphocytes and thus lack an adaptive immune system, but they have somecomponents of an innate immune system, including phagocytes andcertain protective proteins. What are some general features of innateimmunity that make it very valuable to organisms lacking more specific antibody- and cell-mediated responses? What are some disadvantages to having only an innate immune system?
Herd immunity means that the entire population (not just those who are vaccinated) are protected from a disease.  What is one way that herd immunity protects an unvaccinated person (such as an infant who is too young to be vaccinated or a person who is immunocompromised)?
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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MICROBIOLOGY: FUNDAMENTALS CONNECT AC

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