Objective To study the distribution of RHCE phenotype and DEL phenotype in RhD negative donors in Bengbu area,and analyze the exons of RHD gene. Methods RhD( IgM) negative donors were screened out by using anti-D( IgM) reagents. Then RhD negative samples were confirmed by indirect anti-human globulin test( IAT) using 3 different manufacturers or batches of anti-D( IgG) reagents. The donors with DEL phenotype were screened out with absorption-elution tests and their RHCE phenotypes were also detected. 15 sam...