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8 month old foetus

8 month old (34 weeks) female foetus preserved in formaldehyde

At 8 months along a foetus will on average weigh around 2.2 kg and be around 45cm top to toe. At this point most organ systems will have been formed and the baby will be filling out with a layer of fat to help them regulate their temperature. In addition, their finger and toe nails will be fully formed.

This illustration was drawn in the Hunterian museum in the Royal College of Surgeons, London.