In vitro fertilisation. Light micrograph of a micro-needle (left) and pipette (right) that is being used to select a human egg cell (oocyte) during th
In vitro fertilisation. Light micrograph of a micro-needle (left) and pipette (right) that is being used to select a human egg cell (oocyte) during the process of in vitro fertilisation (IVF). The micro-needle will be used to inject a human sperm cell into the human egg cell. This IVF technique is known as intracytoplasmic sperm injection (ICSI). The injected sperm fertilises the egg and the resulting zygote is then grown in the laboratory until it reaches an early stage of embryonic development. It is then implanted in the patient's uterus, where it develops into a foetus. IVF allows infertile couples to conceive a child.
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Photo credit: © ZEPHYR/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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