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Museum and archival collections of parasites are available throughout the world but, although they represent a huge diversity of species and forms, they tend to be used solely for reference to morphology, if at all. As biochemical techniques begin to overcome the problems associated with ancient, degraded and formalin-fixed tissues, the value of such collections increases. Molecular data are now available for rare, elusive and extinct species, as well as those densely sampled for epidemiological, biogeographical or clinical collections. Here, Elisabeth Herniou, Auriol Pearce and Tim Littlewood describe some of the advances and pitfalls associated with retrieving DNA from formalin-fixed helminth material and suggest just some of the new ways that parasitologists can tap into these resources. |
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