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Information about the NCI cell lines is in the DTP/DCTD Tumor Repository catalog.
The process for requesting cell lines is described in the catalog.
Please note these links for more information on the SNB-19, U251, NCI/ADR-RES, and MDA-MB-435 cell lines.

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	DATA FILE SIZE	DOWNLOAD SIZE	LINK
CONCENTRATION/RESPONSE DATA	2320 Mb	2.27 Gb	318 473 Mb	DOSERESP.zip
GI50 DATA	383 385 Mb	33 36 Mb	GI50.zip
TGI DATA	379 380 Mb	29 31 Mb	TGI.zip
LC50 DATA	375 376 Mb	26 28 Mb	LC50.zip
IC50 DATA	384 385 Mb	32 34 Mb	IC50.zip
ONECONC (PRESCREEN) DATA	342 397 Mb	36 44 Mb	ONECONC.zip

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RELEASE_DATE The date of this data release.
EXPID Please see the General Comments above.
PREFIX The identifier of the sequence from which an NSC number was assigned. All public data are in the S series.
NSC The numeric identifier in the S series.
CONCENTRATION_UNIT Please see the General Comments above.
CONCENTRATION The concentration in the pre-screen assay.
PANEL_NUMBER Internal identifier. The combinations of panel_number and cell_number are unique cell line identifiers.
CELL_NUMBER Internal identifier. The combinations of panel_number and cell_number are unique cell line identifiers.
PANEL_NAME The name of the NCI cell line panel (cancer type).
CELL_NAME The name of the NCI cell line.
PANEL_CODE An abbreviation for the panel_name.
COUNT_GIPRCNT Count of GIPRCNT values.
AVERAGE_GIPRCNT Average of GIPRCNT values.
STDDEV_GIPRCNT Standard deviation of GIPRCNT values.

The following files contain data that were cancelled by the laboratory due to quality control issues.

	CSV FILE LINK
CONCENTRATION/RESPONSE DATA	DOSERESP_Cancelled.csv
GI50 DATA	GI50_Cancelled.csv
TGI DATA	TGI_Cancelled.csv
LC50 DATA	LC50_Cancelled.csv
IC50 DATA	IC50_Cancelled.csv
ONECONC (PRESCREEN) DATA	ONECONC_Cancelled.csv

The cancelled data were removed from the December 2022 Release files listed above.