The skin consists of two quite different layers: (1) the epidermis, a superficiallayer of stratified epithelium that develops from ectoderm, and (2) the dermis, or corium, an underlying layer of connective tissue that is largely mesodermal in origin. The dermis makes up the bulk of the skin.
Answer by Aadelman. Confidence votes 169. No. A D&B D-U-N-SÂ® Number is a unique, 9-digit business identification number issued by Dun & Bradstreet, while a federal tax id number or EIN is a separate business identification number issued by the IRS.
it is a taxpayer number like your ssn, but for a business. you really dont need one if you are a sole proprietor. the duns number is a dunn and brastreet number for credit reporting for a business. you dont need this unless you want business credit. be prepared to pay $500 or more for it. they have free ones but they dont report those.