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The origin of biomolecular asymmetry could be found in asymmetric photochemistry in interstellar regions. It is assumed that the amino acids were formed in these regions. The irradiation of solid d,lleucine probes with right circularly polarized synchrotron radiation at 182 nm produced an enantiomeric excess of the d enantiomer of 2.6 %. For more details see the Communication by Meierhenrich, Nahon et al. on the following pages. The image was taken in June 1998 on the space shuttle Discovery.

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