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Table 1 Population surveys of D negative blood donors documented D negative and screened by RHD PCR-SSP

From: RHD positive haplotypes in D negative Europeans

  Samples (n)
Documented phenotype screened PCR-SSP positive D positive*
Testing as single samples
   Ccddee 433 34 0
   ccddEe 271 5 2
   CCddee 24 4 0
   CcddEe 19 4 2
   ccddEE 6 1 0
   CcddEE 1 0 0
   ccddee 314 0 0
Testing as pools of 20 samples
   ccddee 7,374 2 1
Total   50 5
  1. *Samples uncovered on further analysis as weak D, partial D or D+/- chimera. Positive for at least one of four RHD specific polymorphism tested (promoter, intron 4, exon 7 and 3' UTR). Positive for at least one of three RHD specific polymorphism tested (promoter, intron 4, and 3' UTR).
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