5 Best Medical Stocks To Watch Right Now

Although business headlines still tout earnings numbers, many investors have moved past net earnings as a measure of a company's economic output. That's because earnings are very often less trustworthy than cash flow, since earnings are more open to manipulation based on dubious judgment calls.

Earnings' unreliability is one of the reasons Foolish investors often flip straight past the income statement to check the cash flow statement. In general, by taking a close look at the cash moving in and out of the business, you can better understand whether the last batch of earnings brought money into the company, or merely disguised a cash gusher with a pretty headline.

Calling all cash flows
When you are trying to buy the market's best stocks, it's worth checking up on your companies' free cash flow once a quarter or so, to see whether it bears any relationship to the net income in the headlines. That's what we do with this series. Today, we're checking in on Greenway Medical Technologies (NYSE: GWAY  ) , whose recent revenue and earnings are plotted below.

5 Best Medical Stocks To Watch Right Now: Prosensa Holding NV (RNA)

Prosensa Holding N.V., formerly Prosensa Holding B.V., is a biotechnology company engaged in the discovery and development of ribonucleic acid-modulating (RNA)-modulating, therapeutics for the treatment of genetic disorders. The Company�� primary focus is on rare neuromuscular and neurodegenerative disorders with a large unmet medical need, including Duchenne muscular dystrophy, myotonic dystrophy and Huntington�� disease. The Company�� clinical portfolio of RNA-based product candidates is focused on the treatment of Duchenne muscular dystrophy (DMD). The Company�� platform technology allows the development of RNA-modulating therapeutics that either interferes with splicing (exon skipping, exon inclusion, or splice mutation correction), remove mutant RNA, or block RNA expression, for different indications.

DMD is a rare, severe muscle wasting disease that occurs in up to 1 in 3,500 male births. It is commonly diagnosed between the ages of three to five, when boys begin to show signs of impaired motor development. PRO044, the Company�� product candidate, addresses a separate sub-population of DMD patients. The Company developed PRO044 using its exon-skipping technology to generate a product candidate with the same mechanism of action that is used by drisapersen.

Advisors' Opinion:

• [By Brian Orelli]

  Ironically, phase 3 data from Sarepta's direct competitor -- GlaxoSmithKline (NYSE: GSK  ) and Prosensa's (NASDAQ: RNA  ) drisapersen -- that's due in the fourth quarter could help the FDA answer the question about whether dystrophin is an acceptable surrogate endpoint. If increases in dystrophin correlate with clinical outcomes, it would support approving eteplirsen with less data. It's not clear to me whether Glaxo and Prosensa would have to share that correlation with the FDA -- the clinical phase 3 data should be sufficient for approval -- and if it does make those calculations whether the FDA could legally use it to support the approval of another drug since NDA data is proprietary while under patent.

• [By John Udovich]

  Recent news surrounding small cap biotech stocks like�Xencor Inc (NASDAQ: XNCR), Prosensa Holding NV (NASDAQ: RNA),�Puma Biotechnology Inc (NYSE: PBYI),�Geron Corporation (NASDAQ: GERN)
  and TNI BioTech Inc (OTCQB: TNIB) show that while the sector and appetite for biotech�IPOs may have cooled, lottery tickets can still be found or occur in the sector. Just consider the following recent news or trends:

5 Best Medical Stocks To Watch Right Now: Prima BioMed Ltd (PRR)

Prima BioMed Ltd is a biotechnology company is engaged in the development and commercialization of medical therapies with a focus on oncology. Its product candidates in development include Cvac, an autologous dendritic cell vaccine for ovarian cancer, monoclonal antibodies for multiple tumour types, and an oral formulation for the human papilloma virus (HPV), vaccine. Its product candidate Cvac is a dendritic cell therapy, for which it is conducting a Phase IIb trial for the treatment of ovarian cancer. Cvac is designed to target the tumour antigen mucin-1, which is expressed at high levels on different tumour types. It also has two preclinical product development programs. In May 2011, Prima BioMed GmbH, a 100 % owned subsidiary of Prima BioMed Ltd, was incorporated in Germany. In May 2011, Prima BioMed Middle East FZLLC, a 100 % owned subsidiary of Prima BioMed Ltd, was incorporated in the United Arab Emirates.

Top 10 Blue Chip Stocks To Watch Right Now: Organovo Holdings Inc (ONVO)

Organovo Holdings, Inc. (Organovo), formerly Real Estate Restoration & Rental, Inc., incorporated in 2007, is a development-stage company. The Company has developed and is commercializing a platform technology for the generation of three-dimensional (3D) human tissues that can be employed in drug discovery and development, biological research, and as therapeutic implants for the treatment of damaged or degenerating tissues and organs. On December 28, 2011, Real Estate Restoration and Rental, Inc.�� (RERR) entered into an Agreement and Plan of Merger, pursuant to which RERR merged with its, wholly owned subsidiary, Organovo (Merger Sub). On February 8, 2012, the Company merged with and into Organovo Acquisition Corp. (Acquisition Corp.), a wholly owned subsidiary of Organovo, with the Company surviving the merger as a wholly owned subsidiary of Organovo Holdings (the Merger). As a result of the Merger, Organovo acquired the business of Organovo, Inc.

The Company has collaborative research agreements with Pfizer, Inc. (Pfizer) and United Therapeutic Corporation (Unither). As of March 31, 2012, it has five federal grants, including Small Business Innovation Research grants and developed the NovoGen MMX Bioprinter (its first-generation 3D bioprinter). The Company is engaged in the development of specific 3D human tissues to aid Pfizer in discovery of therapies in two areas of interest. In addition, in October 2011, it entered into a research agreement with Unither to establish and conduct a research program to discover treatments for pulmonary hypertension using its NovoGen MMX Bioprinter technology. Additionally, under the research agreement with Unither, the Company granted Unither an option to acquire from the Company a worldwide, royalty-bearing license in certain intellectual property created under the research agreement solely for use in the treatment or prevention of pulmonary hypertension and all other lung diseases.

The Company�� NovoGen MMX Bioprinter is an automate! d device that enables the fabrication of three-dimensional (3D) living tissues comprised of mammalian cells. A custom graphic user interface (GUI) facilitates the 3D design and execution of scripts that direct precision movement of the dispensing heads to deposit cellular building blocks (bio-ink) or supporting hydrogel. The Company is using a third party manufacturer, Invetech Pty., of Melbourne, Australia, to manufacture its NovoGen MMX Bioprinter. Its bioprinting technology and surrounding intellectual property and commercial rights serve as a platform for product generation across multiple markets that employ cell- and tissue-based products and services.

The Company competes with Organogenesis, Advanced BioHealing, Tengion, Genzyme, HumaCyte and Cytograft Tissue Engineering.

Advisors' Opinion:

• [By James E. Brumley]

  If you're looking for some trading action, then Organovo Holdings Inc. (NYSEMKT:ONVO) and Albemarle Corporation (NYSE:ALB) are the two top names to put on your radar today. Granted, they're trading candidates for completely opposing reasons. In fact, the best "play" may be to swap one for the other. However you want to play it though, here's what you need to know about ALB and ONVO.

• [By Keith Fitz-Gerald]

  In the 4D medical world, Organovo Holdings Inc. (NYSE MKT: ONVO) appears to be off to a good start. They've got a number of bioprinting projects centered around functional human tissue, including a liver product that's planned for 2014. I believe the company will quickly branch into tumor modeling, transplantation, and pharma research.

• [By Jake L'Ecuyer]

  Organovo Holdings (NYSE: ONVO) was also up, gaining 2.98 percent to $9.32. The rise in the shares may be attributed to Thursday's Computerworld Article on 3D printed liver coming in 2014.

• [By Jake L'Ecuyer]

  Organovo Holdings (NYSE: ONVO) was also up, gaining 2.54 percent to $9.28. The rise in the shares may be attributed to Thursday's Computerworld Article on 3D printed liver coming in 2014.

5 Best Medical Stocks To Watch Right Now: Algeta ASA (ALGETA.OL)

Algeta ASA is a Norway-based biotechnology company engaged in the development of targeted cancer therapies based on its alpha-pharmaceutical platform. The Company�� principal product is Alpharadin for the treatment of bone metastases resulting from castration-resistant prostate cancer. The Company�� pipeline also includes Alpharadin for the treatment of bone metastases resulting from breast cancer, a combination of Alpharadin with Taxotere for the treatment of bone metastases resulting from prostate cancer and Thorium-227 showing various cancer indications. The Company develops Alpharadin in a development and marketing cooperation with Bayer Schering Pharma. Algeta ASA is active through the two wholly owned subsidiaries, Algeta Innovations AS and Algeta UK Limited. On April 12, 2012, the Company announced that it estabilished a subsidiary active in the United States, Algeta US.

5 Best Medical Stocks To Watch Right Now: Hemispherx Biopharma Inc (HEB)

Hemispherx Biopharma, Inc. (Hemispherx) is a specialty pharmaceutical company engaged in the clinical development of new drugs therapies based on natural immune system enhancing technologies for the treatment of viral and immune based chronic disorders. Hemispherx focuses on two core pharmaceutical technology platforms Ampligen and Alferon N Injection.The commercial focus for Ampligen includes application as a treatment for Chronic Fatigue Syndrome (CFS) and as an influenza vaccine enhancer (adjuvant) for both therapeutic and preventative vaccine development. Alferon N Injection is a United States Food and Drug Administration (FDA) approved product with an indication for refractory or recurring genital warts. Alferon LDO (Low Dose Oral) is a formulation under development targeting influenza. It has three subsidiaries BioPro Corp., BioAegean Corp., and Core BioTech Corp. The Company's foreign subsidiary is Hemispherx Biopharma Europe N.V./S.A.

Ampligen

Ampligen is an experimental drug, which is undergoing clinical development for the treatment of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). Over 1,000 patients have participated in the Ampligen clinical trials representing the administration of more than 90,000 doses of this drug. The Company is also engaged in ongoing, experimental studies assessing the efficacy of Ampligen against influenza viruses.

Alferon N Injection

Alferon N Injection is the registered trademark for the Company's injectable formulation of natural alpha interferon. Interferons are a group of proteins produced and secreted by cells to combat diseases. The Company's natural alpha interferon is produced from human white blood cells. Alferon N Injection [Interferon alfa-n3 (human leukocyte derived)] is a highly purified, natural-source, glycosylated, multi-species alpha interferon product.

Alferon LDO (Low Dose Oral)

Alferon LDO [Low Dose Oral Interferon Alfa-n3 (Human Leukocyte Derived)]! is an experimental low-dose, oral liquid formulation of Natural Alpha Interferon and like Alferon N Injection should not cause antibody formation, which is a problem with recombinant interferon. It is an experimental immunotherapeutic that works by stimulating an immune cascade response in the cells of the mouth and throat, enabling it to bolster systemic immune response through the entire body by absorption through the oral mucosa.

The Company competes with Pfizer, GlaxoSmithKline, Merck, AstraZeneca, Baxter International, Fletcher/CSI, AVANT Immunotherapeutics, AVI BioPharma and Genta.