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Human foetus sucking its thumb, artwork
Human foetus sucking its thumb. Computer artwork of a foetus sucking its thumb in the womb. This foetus is at full term, and is ready to be born. It is surrounded by amniotic fluid contained within the amniotic sac and is connected by the umbilical cord (not seen) to its mother's placenta (not seen) on the uterus wall. A human foetus takes around nine months to develop from an embryo to a fully-formed human baby.
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