1. This project (Feng_2009) included 8 F2 intercross Ð 129xA/J, 129xDBA/2, AKRxNZW, BTBRxSWR, C3HxKK, FVBxRIII, PLxCBA and SJLxRIII. Their map were updated to Build37 Cox genetic map and the new files were saved in 8 separated folders (from ÒFeng_2009aÓ to ÒFeng_2009hÓ). These files are ready to be read into Rqtl; 2. Generated a description file of the project, it includes the general information, definitions of phenotypes, description of genotypes and information of missing markers; 3. For folder "Feng_2009h", it has the description and B37 cross file (.csv) of "SJKxRIII" F2 intercross; 4. For the genotypes of "SJKxRIII" cross: (cM=centiMorgan, bp=basepair) (1) The authors used SNP markers for this project. All the markers have been converted into standard SNP marker (start with "rs") in B37 data file; (2) The bp position of marker "rs3709824" is missing in Cox genetic map, assign the position from current MGI database (this marker was highlighted by orange color in description file); (3) No basepair information was found for marker "rs3716095" in current databases, it was highlighted with yellow color in description file; (4) There was no X chromosome in this cross 5. For the phenotypes of "SJKxRIII" cross: (1) it only included 336 male mice in total; (2) Could not find the definition of phenotype "MAP" from paper, it was highlighted with blue color; 6. Except the "csv" file mentioned above, save the description file, original data files, data files with B37 map, data process record and missing marker list together as a big excel file ("Data_Description_SJKxRIII_Feng2009.xlsx"). (first curating work finished on 5/17/2010, files have been updated on 11/10/2010). 7. Information updated on 10/25/2011: (1) Added the basepair position of marker "rs3716095" ("12-081758527" in original file) in description and B37 data file; (2) Changed the name of the map (from "Shifman" to "Cox" map) in description and readme file, add a map reference in description file; (3) Generate genetic map plot, missing genotypes plot, map comparison plot, whole genome RF plot and problematic chromosome RF plots for B37 data. The last marker on chr 5 and 11 might have a problem (observed from map comparison plot). All quality control plots were saved in "QCReport_Feng2009h.pdf".