Dear Editor

I am writing on behalf of the Association for Clinical Cytogenetics (ACC),
to firstly say how pleased we were to see an image of a Karyotype on the
front of the BMJ (5th January 2013 issue), especially in an era when
Genetic testing is moving to higher resolution more molecular based
testing and the belief that Karyotyping will become less and less
important. It was of course unfortunate that the chosen image, which
depicts a lesser known and most colourful banding technique, was actually
inaccurate. The Chromosomes depicted in the position of the 17's are in
fact 20's and vice versa. We understand the BMJ prides itself on
publishing only the highest quality articles, therefore we thought you
ought to have this piece of information for future reference.

Yours faithfully

Angela Douglas
Chair, ACC

Competing interests: None declared