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Intracytoplasmic sperm injection, or ICSI, is a form of in vitro
fertilization in which fertilization occurs outside of the body.
First, egg cells are harvested and transferred to a special media
in a laboratory dish. Within a few hours, a single sperm is
injected through a fine needle into the center of an egg cell to
aid in the process of fertilization. If successful, the cell will
divide and form the beginning stages of an embryo. If necessary,
the DNA of a single cell from an embryo may be checked to ensure
that various genetic disorders are not present. Typically, several
egg cells are harvested and fertilized at the same time then
inserted back into the uterus to increase the chances that one will
implant and develop into a successful pregnancy.
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