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Table 1 Human embryo biopsy characteristics after zona drilling using acid Tyrode or laser for PGD

From: Laser confers less embryo exposure than acid tyrode for embryo biopsy in preimplantation genetic diagnosis cycles: a randomized study

  ATZD LZD p
PGD Cycles 36 38  
Biopsied Embryos 213 229  
Biopsied Embryos/patient a 5.9 6 0.3
Blastomeres removed 224 235  
Blastomeres lysed 11 (5%) 6 (2.5%) 0.2
  1. Note: ATZD = acid tyrode zona drilling. LZD = laser zona drilling.
  2. amean