- It is suitable for middle schools, colleges, and medical schools as visual teaching aids when teaching physiology and hygiene and physiology and anatomy. 2. The model shows the upper and lower epidermis, mesophyll and leaf veins. The epidermis shows the cuticle, epidermal cells and stomata composed of guard cells; the inside of the leaf shows the composition of the spinels and spongy tissue; the leaf veins show the main veins, lateral veins and fine veins. 3. The cross section of the main vein shows the structure of the vascular bundle (showing the xylem, phloem, and cambium within the leaf) and the thin-walled structure around it. 4. On one side of the model, the relationship between the main vein and the side veins is shown through various sections; the irregularly developed fine veins are shown. - Fine craftsmanship and exquisite details, make it realistic and lifelike, excellent and educational School Accessory.