Name	Type	Attributes	Definition
cell_id	string	required, identifier	"Identifier for the Cell object. This identifier must be unique within  a given study, but it is recommended that it be a universally unique record locator to enable database applications.
"
repertoire_id	string	required, nullable	Identifier to the associated repertoire in study metadata.
data_processing_id	string	optional, nullable	Identifier of the data processing object in the repertoire metadata for this cell.
receptors	array of string	optional, nullable	"Array of receptor identifiers defined for the Receptor objects associated with this cell
"
cell_subset	:ref:`Ontology <OntoVoc>`	optional, nullable	Commonly-used designation of isolated cell population.
cell_phenotype	string	optional, nullable	"List of cellular markers and their expression levels used to isolate the cell population.
"
cell_label	string	optional, nullable	"Free text cell type annotation. Primarily used for annotating cell types that are not  provided in the Cell Ontology.
"
virtual_pairing	boolean	required, nullable	"boolean to indicate if pairing was inferred.
"
cell_type	string	optional, nullable	"Cell type (source). Most often the type should be ""observed,"" meaning it corresponds to an actual physical sample that was sequenced. Other allowed values are ""simulated,"" i.e. the Cells were generated in silico and there is no linked Subject/Sample metadata, and ""inferred"" for Cells that are phylogenetically reconstructed from observed sequences. Inferred Cells should be assigned to a Repertoire with repertoire_type=inferred.
"