Ключевые слова: arousal, attraction, behavior, biochemistry, biology, biotechnology, brain, carbon, chemical, chemistry, compound, disease, drug, education, element, formula, hormone, human, humoral, lab, laboratory, love, medical, medicine, molecule, neuromodulator, neurotransmitter, organic, orgasm, oxytocin, relationship, reproduction, research, romance, romantic, science, scientific, sexual, social, substance, technology,