Oragenics Inc. announced on January 23, 2012, that the company has entered into a fifth amendment to its unsecured revolving line of credit with the Koski Family Limited Partnership, the company's largest shareholder. The fifth amendment increased the available borrowing under the credit facility by $750,000, from $7,500,000 to $8,250,000. All other terms of the credit facility remained the same as in the previous amendments.