White blood cells, also know as macrophages or phagocytes
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The papillary layer provides the layer above it, the epidermis, with nutrients to produce skin cells called keratinocytes. It also helps regulate the temperature of our skin and thus the body as a whole
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Democritus who was a Greek philosipher, believed that everything was made from tiny little indesrtuctible and undividable spheres called atoms at 400 B.C.E. Thomson believed that atoms were positively charged spheres of matter with electrons being randomly scattered in them in 1904
