editorsThe pzerofive Editing team is a dedicated and experienced group of science-writing professionals with expertises that span a wide range of scientific disciplines. We trained at top academic institutions (see below for details) and have published our work in prestigious international journals (e.g., Nature, Science, Development, Neuron, and PLoS Biology). Each of us believes that the research community is enriched when every voice is heard. We strive to remove, therefore, language barriers associated with the English-based publication system.


David D. O’Keefe, Ph.D.dave3
Founder, Managing Editor

B.S., Biological Sciences, Stanford University (1990) Ph.D., Neurosciences, University of California, San Diego (2000)
Postdoctoral Studies, Salk Institute, La Jolla, CA (2000-2002)
Fred Hutchinson Cancer Research Center, Seattle, WA (2002-2007)

Staff Scientist, Fred Hutchinson Cancer Research Center (2007-2010)
Scientific Writer, pzerofive Editing (2010-present)

Dr. O’Keefe has spent the past twenty years studying and writing about developmental biology, cancer biology, and neuroscience. He has published numerous articles in prestigious journals and authored grants that have been funded by both public and private agencies. Since 2010 he has worked full time as an editor and writer, helping scientists reach a global audience, regardless of their nationality or upbringing.

Areas of expertise: biomedical science, cancer biology, cell biology, development, genetics, genomics, and neuroscience

Selected publications


Giana Angelo, Ph.D.

B.A., Biological Sciences, Cornell University, Ithaca, NY (1995)
M.S., Human Nutrition, Tufts University, Boston, MA (2000)
Ph.D., Cellular and Molecular Nutrition, Tufts University (2005)
Postdoctoral studies, Fred Hutchinson Cancer Research Center, Seattle, WA (2005-2011)

Research Associate, Linus Pauling Institute, Oregon State University, Corvallis, OR (2011-present)

Dr. Angelo’s research focuses on the critical interaction between diet and health. Using genetic model organisms and in vitro culture systems, her work has uncovered novel means by which nutrients (or starvation) affect essential physiological processes. At the Linus Pauling Institute, Dr. Angelo communicates results from current research studies that highlight the role dietary factors play in promoting human health and preventing disease.

Areas of expertise: biomedical science, genetics, metabolism, nutrition, physiology, and stem-cell biology.

Selected publications