There was an error published in Development138, 97-106.

The sequence of the lamc1 morpholino was incorrect (a T was omitted). The corrected sentence appears below.

The MO (Gene Tools) used against lamc1 was 5′-TGTGTCCTTTTGCTATTGCGACCTC-3′ (Parsons et al., 2002).

The authors apologise to readers for this mistake.