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Biology: Article Databases

Databases

Boolean Logic

Boolean Logic allows you to combine keywords to make a search more precise. The three terms are: AND, OR, NOT.

AND - Narrows a search

Example: medial collateral ligament AND therapy: Retrieves articles with both medial collateral ligament and therapy.

OR - Expands a search

Example: medial collateral ligament OR mcl: Retrieves articles with just medial collateral ligament, just mcl, and articles with both medial collateral ligament and mcl.

NOT - Removes a term from a search

Example: medial collateral ligament NOT mcl: Retrieves articles with medial collateral ligament, but remove all articles with any mention of mcl. Use NOT sparingly because you often lose many useful articles.