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 the designated Tier1 and Tier2 could be used for ENCODE production; these are selected at the discretion of individual data production groups, and are designated Tier3.

Click the link in the Documents column of the table below to access the cell culture protocol document.