Addendum to: Nature https://doi.org/10.1038/nature01784 Published 24 July 2003

Nature is publishing an editorial expression of concern on the article “Class 3 semaphorins control vascular morphogenesis by inhibiting integrin function” by Serini G. et al. to alert the readership that image integrity issues have been raised with some of the data.

  • Supplementary material Figure 1c (bottom panel): lanes 7 and 10 appear to be duplicated.

  • Supplementary material Figure 1c (bottom panel): lanes 1 and 2 appear to be vertically-shifted duplications of lanes 9 and 10.

  • Supplementary material Figure 1c (bottom panel): lane 5 appears to be a vertically-shifted duplication of lane 8.

  • Supplementary material Figure 1c (middle panel): apparent duplication in background above the bands in lanes 3–8.

  • Supplementary material Figure 1c (top panel): apparent duplication in background above the bands in lanes 3–4.

  • Figure 5: panels f and i for Npn1-DN and PlexA1-DN appear to have multiple overlapping features.

  • Figure 5: panels g and j for Npn1-DN and PlexA1-DN appear to have multiple overlapping features.

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