Closeup of female smile and serotonin hormone formula

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Size: 3668px × 2064px
Photo credit: © BLACKDAY / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: biochemistry, biology, chemical, chemistry, close-, concept, effect, endocrinology, endorphin, face, feeling, female, formula, function, girl, happiness, happy, health, healthcare, healthy, hormone, human, medicine, metabolism, molecular, molecule, mood, natural, person, psychology, science, serotonin, sign, smile, structure, symbol, system, teeth, white, woman