She continued to explain how the fertilised eggs are then cultured in the laboratory so that their growth and development can be evaluated.
The embryos are then transferred back to the woman’s uterus or frozen for later use.
“Once an embryo is transferred back to the uterus, the wait to see if it implants into the uterus starts; patients often report that this is the most stressful part of the whole process and should be counselled accordingly,” she added.
“Once retrieved and brought into the IVF laboratory, the precious cells are flash-frozen in an ultra-rapid process called ‘vitrification’.
“They are stored in tanks – known as dewars – cooled by liquid nitrogen, a temperature well below the one at which cellular activity is brought to a halt, allowing eggs and embryos to remain viable indefinitely.”