Original figure modified for this publication. Butchbach ME, Burghes AH. Perspectives on models of spinal muscular atrophy for drug discovery. Drug Discov Today Dis Models 2004; 1:151. Illustration used with the permission of Elsevier Inc. All rights reserved. From: Butchbach ME. Copy Number Variations in the Survival Motor Neuron Genes: Implications for Spinal Muscular Atrophy and Other Neurodegenerative Diseases. Front Mol Biosci 2016; 3:7. Copyright © 2016 Butchbach. Available at:
http://journal.frontiersin.org/article/10.3389/fmolb.2016.00007/full (Accessed March 27, 2017). Reproduced under the terms of the
Creative Commons Attribution License.
