BCR
TCR
MHC Class I
Chemical structure
Receptor
polypeptide chains
Four
Two
Source of diversity
Diversity after
antigen encounter
Location of
expression
Found on what
cells?
Additional
molecules in
receptor complex
Number of binding
sites
Additional classes of
receptor
Nature of binding
Two
One
(N/A)
Word bank!
Six
Five
Four
Three
Two
One
None
Specific
T lymphocytes
Somatic recombination
Antigen-presenting cells
Always secreted
Additional changes
All nucleated cells
B lymphocytes
Carbohydrate
Cell surface
Cell surface, then secreted
Antigen binding and the MHC
Gamma/delta
Glycoprotein
Gene polymorphism
Gamma, delta, 2 epsilons, and 2 zetas
Iga
Igß
Non-specific
Peptide
No further changes
No changes, stable genes