Anatomical System

• The tissue, organ or anatomical system from which the sample was prepared.
• Examples are digestive, lung and retina.

Cell Type

• The precise cell type from which a sample was prepared.
• Examples are: B-lymphocyte, fibroblast and oocyte.
• Modeled after OBO Cell Ontology (CL).

Pathology

• The pathological state of the tissue from which the sample was prepared.
• Examples are: normal, lymphoma, and congenital.

Developmental Stage

• The stage during the organism's development at which the sample was prepared.
• Examples are: embryo, fetus, and adult.

Pooling

• Indicates whether the tissue used to prepare the library was derived from single or multiple samples.
• Examples are pooled, pooled donor and pooled tissue.

Associated With

• Describes information that is relevant to and associated with the sample, but that relates to the organism from which the sample was prepared from, not to the sample itself.
• Examples are individual genetic characteristics, infection, phenotype and disease state.

Microarray Platform

• Catalogs the Affymetrix GeneChip Human platforms present in the GEO data repository.
• Examples are Affymetrix GeneChip, Affymetrix GeneChip Human Genome U95 Set HG-U95A and Affymetrix GeneChip Human 35K SubA Array Hu35k-A.

Treatment

• Describes the clinical and experimental treatment that the sample was subjected to.
• Examples are clinical treatment, treatment duration and experimental treatment.

Tissue Preparation

• Defines how the tissue was prepared for the experiment.
• Examples are cell line, flow-sorted and microdissected.

Experimental Technique

• Defines the type of experimental method used on the sample.
• Examples are EST, SAGE and ORESTES.

Human Development

• Based on the human Anatomical System ontology with additional terms from developmental stages
• Examples are future dermis or ''mesoderm'

Mouse Development

• An anatomical system ontology for mouse with additional terms from the 26 Theiler stages of mouse development
• Examples are presumptive nephric duct or ''mesoderm'

Theiler Stage

• A hierarchy of the mouse developmental stages, grouped into fetal, embryonic and adult. To be used in combination with the Mouse Development ontology
• Examples are adult or Theiler Stage 10