Ключевые слова: background, biology, blood, bubble, care, chemical, clean, clinical, color, cosmetic, disease, donor, drop, droplet, dropper, equipment, experiment, eyedropper, falling, fluid, glass, graduated, health, hydration, illness, lab, laboratory, liquid, macro, measure, measuring, medicine, moisturize, nutrition, peeling, pharmaceutical, pharmacy, pipette, red, retinol, sample stamp, science, scientific, serum, skin, technology, test, testtube, transparent, tube,