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พระราชบัญญัติคุ้มครองเด็กที่เกิดโดยอาศัยเทคโนโลยีช่วยการเจริญพันธุ์ทางการแพทย??? 2558
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Respecting your beliefs

At Superior A.R.T. we absolutely respect your beliefs. Because of this, we have taken the care to devise acceptable assisted conception programs for virtually all faiths - Christianity, Islam, Hinduism and Buddhism. We guarantee that your eggs and your sperm will never be used in a way that you have not explicitly or implicitly consented to.

When does life start?

There are many views on the moment that represents the beginning of a new life. Some people believe that it is the instant that the sperm enters the egg, for others it is the moment that the genetic material of the two parents come together (this happens some time after fertilisation and is called syngamy), while others again place it at certain developmental milestones of the embryo or fetus, such as implantation, nervous system development or "sentience".

Because of these questions, some people face a moral dilemma when considering cryostorage (freezing) of embryos after an IVF cycle. Embryos are often cryostored if there are more produced than are necessary for a single embryo transfer. It enables a number of embryo transfers while stimulating the ovaries with hormones only once.

For many people, this option is very attractive, since it is the ovarian stimulation that is the most expensive and complicated part of an IVF cycle. But it does mean that there are often embryos produced that will never be transferred. For some people this is not a morally acceptable situation.  20081013154403_pronuclei

Syngamy

Syngamy literally means 'married together'; and is the moment when the genetic material from the egg and the sperm join to become one. It occurs in the fertilised egg about 20 hours after the sperm has entered. A few hours before syngamy the sperm's chromosomes and the egg's chromosomes are visible as separate spheres (or vacuoles) called pronuclei.

At this stage:

  • We know the egg has been successfully fertilised
  • The male and female genetic material have not yet combined
  • The zygote can be transferred to the fallopian tube (by laparoscopy or vaginally, by ultrasound-guided catheter)
  • The fertilised, pre-syngamy egg can be "frozen" (cryostored) for a later decision on its transfer or dissolution (i.e. allowing it to dissolve away).
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