To facilitate integration of data between the contributing research groups, the ENCODE
Consortium identifies common cell types for use by ENCODE contributors.
During the first production phase of ENCODE (September 2007 to July 2012) the common cell types
were divided into two Tiers. Tier1 cells are of higher
priority, and should be used within experiments before Tier2 cells.
Rationale for the selection is described on the
NHGRI ENCODE Common Cell Types page.
Additional cell types beyond Tier1 and Tier2 may be used, but must be registered with the DCC before
submitting data. These additional cell types are designated Tier3.
Click the link in the Documents column of the table below to access the cell culture protocol document.