Ideogram of human mtDNA
Genetics Home Reference, MITOMAP <a rel="nofollow" class="external free" href="http://mitomap.org">http://mitomap.org</a>
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Genetics Home Reference <a rel="nofollow" class="external free" href="https://ghr.nlm.nih.gov/chromosome/mitochondrial-dna#ideogram">https://ghr.nlm.nih.gov/chromosome/mitochondrial-dna#ideogram</a>