Objective To identify a novel KIR3 DL3 allele in southern Chinese Han individuals by complementary DNA( c DNA) cloning and haplotype sequencing. Methods One sample with inconclusive result was identified in sequencingbased typing on the KIR3 DL3 gene. We isolated the total RNA from the fresh peripheral blood of the individuals and c DNA transcripts were synthesized by RT-PCR. The KIR3 DL3-specific PCR products covering the entire coding sequence of the KIR3 DL3 gene was amplified by one pair of KIR3 DL3-spe...