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. Author manuscript; available in PMC: 2014 Jan 30.
Published in final edited form as: Microsc Microanal. 2013 Jan 29;19(1):1–10. doi: 10.1017/S1431927612014043

Figure 2.

Figure 2

Representative example of ontologies for (a) cryo-EM protocols and (b) parameters. The default EMEN2 installation provides a number of protocols and parameters for common cryo-EM equipment, procedures, and experimental data. Only a few items are shown here; the full ontologies can be viewed in Supplementary Figures 1 and 2. New protocols and parameters can be created and shared between EMEN2 installations. Records are organized in a similar hierarchy. While there are no restrictions on how records may be organized, EMEN2 offers suggestions based on common patterns (c). Multiple parents are commonly used to provide context without duplication of data.