any one individual B cell have identical paratopes. The uniqueness of a paratope allows it to bind to only one epitope with high affinity and as a result, each B cell can only respond to one epitope. The paratopes on B-cell receptors binding to their specific epitope is a critical step in the adaptive immune response.

Design of paratopes between species

The design and structure of paratopes can differ greatly between different species. In jawed-vertebrates,

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