Ключевые слова: background, biological, biology, botanic, botanical, botany, cell, cellulose, chlorophyll, cross, cs, cut, education, educational, epidermis, exchange, gas, iris, isolated, leaf, life, light, loss, magnification, material, medicine, membrane, micro, micrograph, microscope, microscopic, nature, nucleus, optical, phloem, plant, research, school, science, scientific, section, slice, stem, structure, tissue, under, vascular, view, white, xylem,