Working individually, ‘cytokine C’ induces a strong response and ‘cytokine A’ induces a weak response. When combined ‘cytokine A’ diminishes the action of ‘cytokine C’. This interaction is best described as: 

All of the following proteins are part of the complement membrane attack complex (MAC) EXCEPT?

29. Positive feedback differs from negative feedback because ________.        

C3b has higher affinity to Factor H when it is bound to the cell surface compared to when it is not bound to a cell surface. 

What complexes does C1INH bind to and inactivate in the classical and MBL pathways (select all that apply): 

A macrophage excretes IL-12 upon ingesting a microbe. This influences a Naïve T cell in close proximity to differentiate into an effector Th1 cell. This would be an example of which target effect:  

Which of the following is characteristic of complement components? 

Which of the following pathways is Magnesium dependent? 

Which of the following is/are a function of complement proteins: (select all that apply)

Which of the following is considered the most potent anaphylatoxin. It has a wide range of actions and acts on phagocytic cells, endothelial cells, neutrophils, and mast cells.