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Kaplan Qbank USMLE



Author4 Posts
  #1

Does anyone have any idea what "Bona Fide Infection" is and what so special about this kind of infection?

The context is

"The T cell with dual specificity could be activated appropriately during a bona fide infection by a professional antigen-presenting cell plus foreign antigen 1 using T-cell receptor 1. But that same T cell, because it is now an activated effector T cell, would also be able to respond to a second peptide, which might be a self-peptide, using T-cell receptor 2, without requiring the co-stimulatory signals only professional antigen-presenting cells deliver"

Here we are talking about T cels with dual specifity, i.e. T cells with 2 kinds of alfa-chains.

Hope someone can enlighten me, thanks!

___________________
There are many things in this world that can’t be changed no matter how hard you try. That’s why you must not hesitate when the time comes where you have to give it all you’ve got.

  #2

http://dictionary.reference.com/browse/bona%20fid...

___________________
Clinical Microbiology since 1974

  #3

I have consulted the dics and they don't make sense. Bona Fide means good faith litterally translated from Latin to English. In this context I suppose it would mean "true", ie. Bona Fide INFECTION = true infection.

Though it still doesn't make sense, what is "true" infection and which mechanisms does this type of infection differ from "false" infection then?

I suppose true infection always involve prof. antigen presenting cells while false infection does not have to, such as in the case of allergy, but then again, it is just a guess, no source to back it up. I've looked everywhere without success. Hope some of you guys aced in immunology or are working with it can enlighten me a little.

___________________
There are many things in this world that can’t be changed no matter how hard you try. That’s why you must not hesitate when the time comes where you have to give it all you’ve got.

  #4

I think you're reading WAY too much into this expression. I think it means that it is a "real" infection. That's all.

___________________
Clinical Microbiology since 1974







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