0. 0. Pellagra results from the deficiency of niacin (vitamin B3). It was first described by Don Casal, a Spanish court physician in the 1700s, where thickened skin was noted in peasants. However, it was not until the 1900s that the cause and treatment of pellagra was determined.Niacin can be derived from:ellagra results from the deficiency of niacin (vitamin B3). It was first described by Don Casal, a Spanish court physician in the 1700s, where thickened skin was noted in peasants. However, it was not until the 1900s that the cause and treatment of pellagra was determined. Niacin can be derived from:
Business plan template. Our free business plan template is part of a kit put together to help you define who you are, describe your business, and document how you will be profitable.
A business plan can be structured a few different ways, but it typically consists of the following elements: 1  summary of your business concept. 2  background information on the business. 3  description of products you plan to offer.  marketing 1  plan. financial plan that includes cash flow, income, and expenses.