A Comment to Nature 467: 761 (13 October 2010).

Nature is at it again.  Comments such as 'O'Donnell is against stem-cell science' and 'an adverse ruling blocking stem-cell research' erroneously conflate embryonic and adult stem cell technologies.  They are NOT the same, ethically or practically.  It is a disservice to science and the general public's understanding of science to suggest that they are.

Dr John R. Ling, Aberystwyth.