Which of the following is TRUE about the C5 convertase? (select all that apply)

BONUS: After all of the turnover in the thymus, one lucky T cell is finally ready to exit, but before this can happen Foxo1 transcription factor activates protein synthesis. What receptor(s) must be expressed on the naive T cell surface to exit the thymus.

BONUS: What is the function of CR1 on erythrocytes?

What would happen if a naïve T cell did not express the sphingosine 1 phosphate receptor?

Which of the following reactions features mast cell degranulation as one of its key features?

Some strains of staphylococcal bacteria express staphylokinase. Staphylokinase can degrade IgG. Based on this information, which complement pathway is impacted? Describe the steps of this complement pathway from the formation of the C3 convertase through to the membrane attack complex (MAC).  

BONUS: How does complement participate in the contraction phase of the immune response?

Of the molecules listed, which can be considered the key molecule in ALL complement pathways?

Which complement protein can activated as a soluble (H2O) environment around a pathogenic microbe?

A patient suffering from bare lymphocyte syndrome has a defect in __.