Apple fruit section, skin to parenchyma cells (Malus domestica), coloured scanning electron micrograph (SEM). Shown here is a section through the apple from skin, through a layer of compact epidermal cells, to the first layer of the interior cortex parenchyma (storage) cells. Dense epidermal tissue is developed in external layers; its cells have thick walls and the outer surface is covered with waxy cuticle. Compared to many other fruits and vegetables, apples contain relatively low amounts of vitamin C, as well as a several other antioxidant compounds. They may also help with heart disease, weight loss and controlling cholesterol, as they do not have any cholesterol, have fibre, which reduces cholesterol by preventing reabsorption, and are bulky for their caloric content like most fruits and vegetables. Magnification: x120 when shortest axis printed at 25 millimetres.
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