Table of Contents

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Volume 28, Number 15
05 August 2009

pp 2143-2306

A glimpse of the invisible
The cells of vertebrate lenses undergo extreme specialisations to become invisible. They degrade all organelles, including their nuclei, and yet survive for up to 100 years. Lens cells are also very long, stretching from one lens pole to the other, similar to the longitude lines on a globe. Their regular, hexagonal profiles allow a precise arrangement of cells in the lens. This digitally enhanced scanning EM image was prepared by Ralf Dahm at the MPI for Developmental Biology, Tübingen, Germany, who has been working on different aspects of lens biology for 15 years. Ralf is fascinated by how a biological tissue can become transparent. He is also very interested in how cataracts change visual perception and affected the work of artists such as Claude Monet. For more information please visit www.ralf-dahm.com.

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