sliding base concrete tanks for liquid storage applications for nearly a century. In 1930 Preload designed and constructed its first water storage tank and since 1952, Preload has designed and ...
What are skin pigment disorders? Skin color is determined by a pigment (melanin) made by specialized cells in the skin (melanocytes). The amount and type of melanin determines a person's skin color.
One enzyme has a key role in determining whether parrots’ rainbow plumage emerges in vibrant reds, yellows or greens, a new study shows. But how psittacofulvin pigments shift shades was unclear.