The Chromosomal Constitution of Embryos Arising from Monopronuclear Oocytes in Programmes of Assisted Reproduction

<table>Following ICSI in our programme of assisted reproduction, this oocyte displayed a single pronucleus (PN) and two polar bodies (PB1 and PB2) on the following morning. Because another pronucleus could not be detected after a second inspection several hours later, the cell was subjected to cytogenetic analysis and revealed a haploid karyotype (23,X).</table>

International Journal of Reproductive Medicine

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Figure 1

Figure 1: The Chromosomal Constitution of Embryos Arising from Monopronuclear Oocytes in Programmes of Assisted Reproduction 