The long-standing model of pigment cell origins is implicitly based upon a progressive fate restriction model of neural crest development and postulates the existence of a partially restricted progenitor common to all pigment cell types (i.e., a chromatoblast) [38] .
Sodium is the fourth most abundant element on earth, comprising about 2.6% of the earth's crust; it is the most abundant of the alkali group of metals. It is now obtained commercially by the electrolysis of absolutely dry fused sodium chloride.
No. Sodium, or Na, is an element on the periodic table. Sodium bicarbonate is also known as baking soda and is a compound made of sodium, oxygen, hydrogen, and carbon. 7 people found this useful.Edit.aking Soda (sodium bicarbonate). 521,978 CONTRIBUTIONS. Robin Harris' writing has been published in scholastic publications, books, newspapers, anthologies and online. While writing is her first love, Robin is also passionate about everything that goes on in the kitchen, and enjoys the opportunity to combine the two.