A Study is a container for a sequencing investigation that may comprise multiple experiments. The Study has an overall goal, but is otherwise minimally defined in the SRA. A Study is composed of a descriptor, zero or more experiments, and zero or more analyses. The submitter may decorate the Study with web links and properties. Title of the study as would be used in a publication. The STUDY_TYPE presents a controlled vocabulary for expressing the overall purpose of the study. Sequencing of a single organism. Sequencing of a community. Sequencing and characterization of transcription elements. Sequencing of a sample with respect to a reference. Cellular differentiation study. Sequencing of modified, synthetic, or transplanted genomes. Sequencing of recovered genomic material. Study of gene expression regulation. Study of cancer genomics. Study of populations and evolution through genomics. RNA sequencing study. The study investigates the exons of the genome. The study is sequencing clone pools (BACs, fosmids, other constructs). Sequencing of transcription elements. Study type not listed. To propose a new term, select Other and enter a new study type. Briefly describes the goals, purpose, and scope of the Study. This need not be listed if it can be inherited from a referenced publication. DEPRECATED. Use STUDY@center_name instead. Controlled vocabulary identifying the sequencing center, core facility, consortium, or laboratory responsible for the study. Submitter defined project name. This field is intended for backward tracking of the study record to the submitter's LIMS. DEPRECATED (use RELATED_STUDIES.STUDY instead). The required PROJECT_ID accession is generated by the Genome Project database at NCBI and will be valid also at the other archival institutions. Related study or project record from a list of supported databases. The study's information is derived from this project record rather than stored as first class information. Whether this study object is designated as the primary source of the study or project information. More extensive free-form description of the study. Links to resources related to this study (publication, datasets, online databases). Properties and attributes of the study. These can be entered as free-form tag-value pairs. For certain studies, submitters may be asked to follow a community established ontology when describing the work. An STUDY_SET is a container for a set of studies and a common namespace.