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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