There was an error in the ePress version of Development137, 4127-4134 published on 10 November 2010.
On p. 4133, the title of Fig. 6 was incorrect. The correct title appears below:
Adult midbrain DA regeneration depends on hedgehog signalling.
The online issue and print copy are correct.
We apologise to authors and readers for this mistake.
© 2011.