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Upon recognition of pathogen via innate immune receptors, what co-stimulatory molecule does a dendritic cell start expressing that allows it to activate naive T-cells?

Sphingosine 1-phosphate directs naive T-cells out of the lymph node back into the lymph.

Double negative thymocytes will simultaneously initiate rearrangement of which receptor genes first? 

A thymectomy of a 25 year old male will result in:

T-cells are activated in the _______ and T-cell maturation takes place in the _______?

Which of the following is false about positive selection?

JAK’s are responsible for phosphorylating ___ which are a ___ that leads to gene expression.

When would you expect to see RAG-1 and RAG-2 expressed during the process of T-cell development?

Which of the following is false about Complete DiGeorge’s Syndrome?

Which of the following is true about AIRE?