serotonin tattoo tumblr - Google Search More
Serotonin Molecule Tattoo, flower tattoo, happiness tattoo...
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Oxytocin. Use as a couples tattoo? One half on you and the other on the one you love.
molecule tattoo 3d - Google Search
An ATP molecule. | 23 Incredibly Elegant Science Tattoos
My serotonin molecule tattoo, I love it so much!
Wait this is basically exactly what I'm going to get, just on the left shoulder only.
Spirit molecule. DMT. Tattoo
Floral serotonin molecule More