DEFINITION of 'Commercial'. Relating to commerce. In the investment field, the term commercial is generally used to refer to a trading entity engaged in business activities that are hedged by positions in the futures or options markets.
The melanocortin 1 receptor controls which type of melanin is produced by melanocytes. When the receptor is activated, it triggers a series of chemical reactions inside melanocytes that stimulate these cells to make eumelanin. If the receptor is not activated or is blocked, melanocytes make pheomelanin instead of eumelanin.
Transcript of Melanocyte Stimulating Hormone (MSH) and Melatonin. secreted by the pituitary gland. specifically the intermediATE lobe. comes from the protein POMC (pro-opiomelanocortin) functions in the pigmentation of skin, hair and eyes. people with red hair and/or fair skin have a mutation in there MCR1 gene where they produce a mass amount of pheomelanin instead of eumelanin (also called black melanin) Melanocyte Stimulating Hormone. Melanocyte Stimulating Hormone (MSH) and Melatonin.