Tyson tyson at canada.com
Thu Nov 18 14:07:02 EST 1999

that's why haptens are called haptens and not antigens....

...haptens are too small to illicit an immune response...small organic
molecules or metals are too small to be recognised and therefore require a
carrier protein to bring about an adaptive response
....haptens cannot recruit T-cell help...but the addition of a
chemicaly-linked carrier protein allows the priming of T-cells with peptide
from the carrier

<Jenfromwcu at AOL.COM> wrote in message news:0.5fa1cde4.2564a927 at aol.com...
| Why do haptens need a carrier protein?  Why can't they elicit and immune
| response themselves?

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