Melanin is a polymer which is derived tyrosine. Melanin is responsible for determining the colour of skin and hair. The presence of melanin in the skin depend on content it has been exposed to the sun. Eumelanin, Pheomelanin and Neuromelanin are the different types of melanin. Neuromelanin is usually found in brain and loss of this melanin leads to several neurological disorders.
Scientific journal is a periodical publication intended to further progress of science, usually by reporting novel research. There are thousands of scientific journals in publication, and many more have been published at various points in the past. Most journals are highly specialized, although some of the oldest journals publish articles and scientific papers across a wide range of scientific fields. Scientific journals contain articles that are peer reviewed, to ensure that articles meet the journal's standards of quality, and scientific validity. The publication of the results of research is an essential part of the scientific method. If they are describing experiments or calculations, they must supply enough details that an independent researcher could repeat the experiment or calculation to verify the results. Each such journal article becomes part of the permanent scientific record.
Last date updated on May, 2021