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Kaplan Qbank USMLE



Author4 Posts
  #1

A healthy woman gave birth to a baby. The newborn infant was found to be HIV-seropositive. This finding is most likely the result of

A) The virus being transferred across the placenta to the baby.

B) The baby is making anti-HIV antibodies.

C) The baby's erythrocyte antigens cross-reacting with the virus.

D) The mother's erythrocyte antigens cross-reacting with the virus.

E) Maternal HIV-specific IgG being transferred across the placenta to the baby.

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FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."

  #2

Either A or E.. if its IgM antibodies, its A..

But i kinda like e better wink So E it is..

___________________
"Whether you think you can or whether you think you can't, you're right!" ~ Henry Ford

  #3

e

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"Deh Shiva Var Mohe Ahey ,Shubh Karman Te Kabhun Na Tarun ,Na Darun Arson Jab Jaye Laroon, Nischey Kar Apni Jeet Karoon"

  #4

E. The most likely explanation is that the "healthy" mother has been infected with HIV-1 and is making anti-HIV IgG, which is transferred to the fetus and newborn trans-placentally. While it is possible that the HIV was transferred to the infant across the placenta, this would not cause the newborn to make antibodies to the virus at this young age��" thus answers A and B are incorrect. Answers C and D are false because this unlikely situation would result in the recognition of the viral antigen as ``self'' and the individual would not make anti-self antibodies.


___________________
FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."







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