Methods Blood samples were collected from 37 asthmatics patients and 60 unrelated normal individuals with informed consent. The DNA was isolated from PBL by using a salting out technique. SNPs were selected from dbSNP: http://www.ncbi.nlm.nih.gov/SNP/. Nine VDR polymorphisms were genotyped: FokI (rs2228570), Apal (rs7975232), BsmI (rs1544410), TaqI (rs731236), rs703842, rs4516035, rs 2248098, r...
