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Aug 15, 2005
 |  BioCentury  |  Tools & Techniques

Two parts; one system

The Toll Collectors

Two parts; one system

Toll-like receptors are an important link between the adaptive and innate immune systems, which are interdependent but have important differences. While the adaptive part of the immune system is able to recognize a seemingly infinite number of specific antigens that are unique to individual strains or groups of pathogens, the innate part identifies a limited number of generic classes of pathogen molecules.

The adaptive immune response is highly specific and long lasting, and thus results in the ability to recognize and respond more rapidly to a subsequent encounter with a pathogen. However, it can take several days to react....

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