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False-colour SEM of human hair & skin surface
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False-colour SEM of human hair & skin surface
False-colour scanning electron micrograph (SEM) of the surface of human skin, showing two hair shafts penetrating the outer layer of squamous cells that comprise the epidermis. The hairs are covered by a modified cellular layer called the cuticle of the hair: these cells are highly flattened & partially overlap one another. The epidermal cells are composed of the protein keratin, which provides a tough uninterrupted covering over the body surface; keratin serves as a waterproofing material & is impermeable to many disease organisms. Magnification: x160 at 35mm size, x320 at 6x7cm size
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Media ID 6423268
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Hair Shaft Skin Surface False Coloured
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This print from Science Photo Library showcases the intricate details of human hair and skin at a microscopic level. Using false-color scanning electron microscopy (SEM), the image reveals two hair shafts penetrating through the outer layer of squamous cells that make up the epidermis. The hairs are enveloped by a specialized cellular layer known as the cuticle, which consists of highly flattened cells that partially overlap each other. These unique structures provide protection and support to the delicate strands. Meanwhile, the epidermal cells themselves are primarily composed of keratin, a tough protein that forms an unbroken barrier over our body surface. Keratin not only acts as a shield but also serves as a waterproofing material, preventing moisture loss and maintaining hydration levels within our skin. Furthermore, its impermeability plays an essential role in blocking various disease-causing organisms from entering our bodies. At magnifications of x160 for 35mm prints and x320 for 6x7cm prints, this SEM image offers us an extraordinary glimpse into the complex surface anatomy of hair and skin. It highlights both their structural intricacies and their vital functions in protecting our bodies against external threats.
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