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One of the pieces, which was about 0.67 cm in length, had penetrated the limbus, or the border between the cornea and the sclera.

New corneal cells are generated from a niche of stem cells in the limbus, an area between the cornea and the white of the eye.

The undifferentiated cells were found in the corneal limbus, a narrow ring around the lens separating it from the sclera, the white of the eye.

Scientists used the tracing molecule to detect the elusive limbal stem cells deep inside the limbus, which is an area between the white portion of the eye and the cornea.

For strong souls know no half way between heaven and hell--no purgatory, no limbus infantium.