Ключевые слова: abstract, art, atom, atomic, background, biochemistry, biology, black, button, chemical, color, colorful, compound, connection, contour, design, dna, drawing, drug, education, element, eraser, formula, icon, illustration, isolated, line, linear, lineart, medical, medicine, model, molecular, molecule, neon, object, office, organic, outline, research, school, science, scientific, set, structural, structure, symbol, technology, write,