1. Update the map of data set with Build37 Cox genetic map (B37) and save the new file as "Brich2003_BALBxB6_B37_Data.csv". This file is ready to be read into Rqtl; 2. Generate a description file of the project, it includes the general information, definitions of the phenotypes, description of the genotypes and information of the missing markers; 3. For the genotypes of this cross: (cM=centimorgan, bp=basepair) (1) Change the symbol of BALB/cByJ allele from "A" to "C" (standard format in data sets of QTL archive), remove redundant spaces in file and save the changes in B37 data file; (2) Remove extra "0" from some marker names and save the changes in B37 data file. The description file has the list of original marker names and modified marker names used in B37 data file; (3) The bp position of marker "D12Mit14" is missing in both Cox map and MGI. Primer sequences found in MGI, but no target templates were found in primer-BLAST in NCBI. We could not identify the B37 bp positions of these markers currently (this type of markers is highlighted with dark yellow color in description file); (4) The bp position of marker "D14Mit75" is missing in both Cox map and MGI. No primer sequences are available for them from MGI. We could not identify the B37 bp positions for these markers currently (this type of markers is highlighted with pale blue color in description file); (5) Five markers miss bp positions in Cox genetic map, assign the positions from current MGI database. This type of markers are highlighted with gold color and please see description file for details; 4. For the phenotypes of the cross: (1) The information of intervention (type of diet) is not found in paper (highlight in blue color); (2) The sex of the mice used in experiment is missing in paper (highlight in blue color); (3) The original data file doesn't have the information of paternal grandma (pgm, which indicates the direction of cross), I add the column of "pgm" into the B37 data file; (4) There is no grant information in paper; 5. Except the "csv" file mentioned above, I also saved the description file, original data, data with B37 map, data process and list of missing markers together as a big excel file ("Data_Description_BALBxB6_Brich2003.xlsx") (1st curating work is finished on 5/25/2011). 6. Information updated on 10/5/2011: (1) Correct a marker ID error on chromosome 10, update description file, B37 csv file and readme file; (2) Generate genetic map plot, missing genotypes plot, map comparison plot, whole genome RF plot and problematic chromosome RF plots for B37 data. Problematic markers were found on chr 2, 3, 7, 10 and 11. All quality control plots were saved in "QCReport_Brich2003.pdf".