ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
E-mail. Conceptual image of an @ (at) sign superimposed on an X-ray of a human skull in profile. The @ sign is used in all electronic mail (e-mail) addresses. The human skull is comprised of several fused bones, which together form the cranium (centre) that encases the brain. Nasal, cheek and jaw bones form the facial skeleton (lower right). The vertebrae of the neck are seen at lower centre.
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