Explode
Explode is a function that allows you to expand your search strategy to incorporate a term, and its more specific terms. For instance by exploding the subject heading "Face" your search will also find cheek, chin, eyes, eyebrows, eyelids, mouth, lip, palate, tongue and nose. For this demonstration if you are interested in other types of Sickle Cell Anemia, you can explode the broad term Anemia, Sickle Cell and then select the more specific types, namely Hemoglobin SC Disease and Sickle Cell Trait which are indented under it in the Tree Display. When you explode a term the system will automatically retrieve all citations indexed with that term as well as all the citations indexed to the narrower terms indented under it. Note: Exploding Anemia, Sickle Cell retrieves 9836 citations. This includes citations indexed to the more specific terms Hemoglobin SC Disease and Sickle Cell Trait, as well as Anemia, Sickle Cell.
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This MEDLINE Tutorial was adapted, with permission, from Duke University Medical Center Library, http://www.mc.duke.edu/mclibrary/respub/guides/ovidtut/index.html, ©2000 Duke Uinversity Medical Center.
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