This post is one in a series in which more than 60 newsletter advisors share their Top Stock Picks for 2011. This special report is courtesy of TheStockAdvisors.com.

"We are recommending Aastrom Biosciences (ASTM) as our top stock recommendation for 2011 because we believe that they are the clear leader in the regenerative stem cell space," notes biotech sector specialist John McCamant.

The editor of The Medical Technology Stock Letter explains, "The company is focused on the development of autologous cellular therapies for the treatment of cardiovascular diseases utilizing its Tissue Repair Cell (TRC) technology.

"Geron (GERN) is developing first-in-class biopharmaceuticals for the treatment of cancer and chronic degenerative diseases, including spinal cord injury, heart failure and diabetes," says Tom Bishop.

In his BI Research advisory he explains, "The company is also a, if not the, world leader in the development of human embryonic stem cell-based therapeutics." Here's his in-deth analysis of the company.

"Sangamo BioSciences (NASDAQ: SGMO) has again received significant scientific validation for its proprietary technology," says biotech expert John McCamant.

In The Medical Technology Stock Letter, he explains, ""Part of what has gotten investors so excited about stem cells was the concept that some day scientists would be able to create 'personalized' stem cell types for individual therapy. We believe that this is the break that was needed to realize the potential of stem cell therapy."

"Stem cells differ from other cell types in two fundamental ways. First, they are unspecialized cells capable of renewing themselves through cell division.

"Second, under certain conditions, they can be induced to become tissue- or organ-specific cells with special functions.

For 25 years, Steven Halpern, editor of TheStockAdvisors.com, has surveyed the leading financial newsletter advisors asking for their favorite stocks for the coming year. This article is one of 100+ ideas in the Best Stocks for 2008 report.

"Our favorite speculative pick for 2008 is (NASDAQ: IVGN)," says Daniel Frishberg, editor of The MoneyMan Report and host of BizRadio.

"Invitrogen is a $4.5 billion company that markets tools in kit form and provides other research products and services to corporate, academic, and government entities. The company has over 25,000 products.

"The company is also involved in stem cells, which are cells in an early stage human embryo that have the potential to turn into any other type of cells, e.g., heart, nerve, kidney, pancreas, etc.

"There has been much debate about stem cell research due to the killing of an embryo. However, a major breakthrough suggests that stem cells can be created from your own skin cells.

"A new study on stem cell research is mind-boggling," notes emerging growth expert Toby Smith in support of his recommendation for Geron Corp. (NASDAQ: GERN).

The growth stock expert and editor of ChangeWave Investing explains, "Geron reported its scientists and collaborators have demonstrated that human embryonic stem cell (hESC)-derived cardiomyocytes improve heart function when transplanted after myocardial infarction.

"Published online on Aug. 26, in Nature Biotechnology, the landmark study is the first to document the potential clinical utility of regenerating damaged heart muscle by injecting hESC-derived cardiomyocytes directly into the site of the infarct.

"In addition, the research confirms the effectiveness of a scalable production system that enables Geron to manufacture the cardiomyocytes for use in ongoing large animal studies and, ultimately, testing in humans."