The MASR provides full services of genome-wide gene expression profiling and SNP genotyping on all Affymetrix commercially available GeneChips based on the needs of investigators. All steps of GeneChip analysis are performed according to standard operating procedures (SOP) following the manufacturer's recommendations. For all levels of service including sample preparation and labeling, chip hybridization/staining, chip scanning and initial image analysis are provided and further data analysis is also offered in collaboration with statisticians. To ensure reliability of results, continuous quality controls are performed in collaboration with statisticians. These quality controls include i) testing of reproducibility of sample processing, ii) analysis of variability of chip production by Affymetrix iii) evaluation of reliability of equipment. The average turn-around time is three days from cRNA samples and 1~2 weeks from total RNA samples. Please visit Affymetrix website http://www.affymetrix.com for update technology and product availability: