Step I UWorld Question 2104

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tco

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15+ Year Member
MHC II on T-helper cells? What did I miss? Am I just really tired/hungry right now?
 
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iA-MD2013 said:
they say the cell expresses "MHC class II antigen." that sounds more like the T cell receptor (the antigen) that binds MHC II?
or maybe it really is a mistake...there's no way T cells express MHC II.
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isn't the 'MHC II antigen' what the MHC II is presenting? I think it's a mistake also.
 
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iA-MD2013 said:
how exactly did they word it? I remember thinking that they were referring to the TCR.
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I don't know what all I'm allowed to post.

Basically, it's a question asking about acute rejection and it says the cells involved are "abundant mononuclear cells expressing MHC class II and IL-2 receptors."

In the answer explanation, it says that the "mononuclear cells expressing MHC class II antigen and IL-2 receptors are CD4+ (T-helper) lymphocytes."
 
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tco said:
I don't know what all I'm allowed to post.

Basically, it's a question asking about acute rejection and it says the cells involved are "abundant mononuclear cells expressing MHC class II and IL-2 receptors."

In the answer explanation, it says that the "mononuclear cells expressing MHC class II antigen and IL-2 receptors are CD4+ (T-helper) lymphocytes."
Click to expand...

I think "receptors" is referring to both receptors for MHC class II and IL-2. They probably should have written it twice. Bah.
 
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