DENVER--(BUSINESS WIRE)--Cannabis Science, Inc. (OTCBB:CBIS.OB - News) a pioneering U.S. biotech company developing pharmaceutical cannabis (marijuana) products is monitoring the outstanding progress of the 3rd Self-Medicated Cannabis Patient with Clear Continued Improvement. This self-medicating patient has what his doctors describe as the worst case of squamous cell carcinoma the had ever seen. This patient’s tumors, while resistant to conventional treatment, continues to make obvious improvement with the use of cannabis extracts.