![]() |
2PN Embryo - 16-18 hours old - the male and female DNA pronuclei are next to each other in the center of the embryo. |
12 embryos might sound like A LOT of babies to some of you out there but I was reading up on 2PN embryos and learned a few things: 2PN stands for "pronuclear" which means that the egg has been fertilized for 18 hours and is a single cell with two pronuclei. (One pronuclei has the male DNA and other other with the female DNA which has not fused together yet.) This is much different than our first match where the embryos were 5 days old at the blastocyst stage. When our 2PN embryos are thawed they will have to grow for a few days in a petri dish before they can be transferred to my body. I read that roughly 30% of 2PN embryos make it to the blastocyst stage so it will be interesting to talk to Dr. K and see if he wants to do a 3 day embryo transfer or a 5 day blastocyst transfer. It seems like there will be more decision making with a group of 2PN embryos than our last transfer with 5 day blasts. You know. . . you think you know about "baby making" and then you read up on embryos, pronuclei, blasts, etc. and you really realize what a miracle a baby is. I am glad we have Dr. K to help us through all of this. He is great at explaining things and always draws funny diagrams to go along with his explanations.
Let's hope that our adoption of these 12 embryos goes quickly and smoothly! Happy New Year everyone!