'Twas the night before Christmas, and deep in the house There were trillions of creatures astir in the mouse. The immune system handled the microbes with care; PGRPs would soon see them there. (p837)

The T cells were nestled all snug in their node; An influx of DCs made their numbers explode. On MHC molecules, thanks partly to TAP, Peptides had settled to prompt an attack. (p823)

When in the lymph node there arose such a clatter, CTLA4 tried to resolve this matter. (p852) But the activated T cells flew like a flash, Tore into the microbes and turned them to mash.

The systems biology tools we now know Show the lustre of all the immune cells below. (p873) But when to our wondering eyes will appear The vaccines we need for the century now here? (p865)

The little old driver was lively and quick; I was startled to learn that he was arthritic. More rapid than eagles his symptoms they came; Did TLR triggering of T cells bring pain? (p807)

A wink of his eye and a twist of his head Soon gave me to know all our Highlights he'd read. So now, from the team, 'fore we leave to go write, “Happy Christmas to all, and to all a good-cite!”