Antigen presenting cells
Help to clear infection
And they help your thymocytes
Go through t-cell selection
Endocytose antigen
And then cross-present it
All to slow the illness down
Or possibly prevent it
Activate a CD8
This will help you be well
It will differentiate
To cytotoxic t-cell
Systems of immunity
Fusing with perfection
Thank Adaptive and Innate
For giving such protection!
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Metabolic Melodies calendar for 2010 HERE
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