Sara Faust writes, “The Science Ink collection has been a favorite among my friends and me for a long time, and I am excited to finally be able to submit for your consideration a (hopefully) unique nerdy tattoo of my own. After explaining to the tattoo artist and various family friends that, no, it is not a raisin or a boot tread or a pill, it will be a relief to share it with people who perhaps will appreciate the humor of an endosymbiotic twist on the classic “Mom” ink. The moment I first learned about mitochondrial DNA, my immediate reaction was, ‘That would make a great Mom tattoo…’ Years later, it’s finally a reality!”