1. This data set was merged from 2 QTL projects -- Smith 2002 and Kumar 2008 (the information of the publications were listed in the description file). Update the map of data set with Build37 Cox genetic map and save the new file as "Smith2002_B6xCAST_B37_Data.csv". The file is ready to be input into Rqtl; 2. Generate a description file of the project, it includes the general information, definitions of phenotypes, description of genotypes and information of missing markers; 3. For the genotypes of the cross (cM=centiMorgan, bp=basepair) (1) Change marker name from "D#" into correct DMit markers and change the spelling mistake of 3 markers (D16Mitit140, D16Mitit19 and D16Mitit20 ---> D16Mit140, D16Mit19, D16Mit20) in the data file, save the change in map updating file; (2) Marker "D2Nds3" and "D6Nds4" were unmapped (neither cM nor bp) in Cox map. To get bp positions of them, their primer sequences were found in MGI, and their locations were identified using primer-BLAST in NCBI followed by UCSC In-Silico PCR. Then the bp positions were converted into B37 cM through Map Converter tool (these markers are highlighted with tan color in description file); (3) Unable to find cM position of marker "D8Mit1" from Cox map directly, bp positions assigned based on MGI, then convert it to cM through Map Converter tool (marker is highlighted with light yellow color in description file); (4) Marker "D2Mit51", "D7Mit18" and "D19Mit2" missed bp positions in both Cox genetic map and MGI database. Their primer sequences found in MGI, and their bp locations identified using primer-BLAST in NCBI followed by UCSC In-Silico PCR (these markers are highlighted with lime color in description file); (5) Some markers missed bp positions in Cox genetic map, assigned their bp information from MGI database. For the details, please check the 1st page of description file (these markers are highlighted with light orange color in description file); (6) The original data file only includes 502 male mice. But Rqtl detected 1497 heterozygous alleles "H" on X chromosome after data input. They might be caused by genotyping error, or the syntax of old version of analysis program (pseudomarker). I changed all of the "H" on X chromosome to "C" and it worked in Rqtl (suggested by Gary in 7/21/2009), the changes have been saved in data file "Smith2002_B6xCAST_B37_Data.csv" and "B37_Data" spreadsheet in description file; 4. For the phenotypes of the cross: (1) Couldn't find the definitions of trait "TgB", "TkB", "Feed-efficiency" and "10d-sum-gm-intake" in phenotypes and I labelled them with "not in paper" in description file; (2) This project was a reciprocal intercross and trait "pedigree" indicated the direction of the cross (0=strain of paternal grandma was B6; 1=strain of paternal grandma was CAST). I changed the name of this trait to "pgm" (paternal grandma) in B37 data file; 5. Except the "csv" file mentioned above, save the description file, original data, data with B37 map, data process record and missing marker list together as a big excel file ("Data_Description_B6xCAST_Smith2002.xlsx"). (first curating work finished at 6/3/2009, files updated at 7/6/2009, 2/6, 2/19, 7/22, 11/30/2010) 6. Information were updated on 5/25/2012: Change the name of the map (from "Shifman" to "Cox" map) in description and readme file, add a map reference in description file.