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Martin Madaus, Francis Lunger, Heino von Prondzynski, Jason Van Tassel, Kurt Vedder, Henning Mennenh, Linda Horton, Holger Reithinger, Michael Towe, William Beltz, Gregory Gosch

Martin Madaus, president and chief executive officer of Roche Diagnostics, will join Millipore of Billerica, Mass., as president and chief executive officer in February, the company said this week. He replaces Francis Lunger, who will remain chairman of the board of Millipore in a transition period. Madaus, 45, who led Roche Diagnostics since 2000, will also join Millipore’s board. Madaus previously was president of business development for Roche Diagnostics, a position he took when Roche acquired Boehringer Mannheim, where he was general manager of the company’s Canadian business. Heino von Prondzynski, the head of Roche’s worldwide diagnostics business, based in Basel, Switzerland, will take over Madaus’ role as the company seeks a replacement, Roche said.

Jason Van Tassel was named to the scientific advisory board of CalbaTech of Irvine, Calif., the company said this week. Van Tassel is a physician with a practice specializing in plastic surgery in Los Angeles. Previously, he was a researcher with Hybritech. CalbaTech is an early-stage company focusing on the acquisition of molecular and cellular biology technology platforms in the US and the UK.

Kurt Vedder joined the venture capital firm De Novo Ventures of Menlo Park, Calif., as director of strategic business development and research, the company said last week. Previously, Vedder was a business development manager for Guidant and Medtronic. De Novo invests in early-stage life-sciences technologies and medical devices.

Henning Mennenöh will join the Munich offices of Hogan & Hartson, the law firm said last week. He joins the firm as the company launches a US and Europe life sciences practice. Mennenöh, who previously worked at the firm of Allen & Overy as a corporate partner, is a specialist in mergers and acquisitions in pharma and biotech, the company said. He will join Linda Horton, who moves from the firm’s Washington DC offices to Brussels. Horton previously worked at the US Food and Drug Administration as legislative chief, deputy chief counsel, and director of international policy.

Holger Reithinger will join German Global Life Science Ventures as principal in the private-equity firm’s Munich offices, the company said last week. Previously, Reithinger was director of 3i Germany’s healthcare practices, overseeing investments in Europe.

Michael Towe, chief financial officer of General Electric Equipment Services, will join Roper Industries of Duluth, Ga., as chief financial officer, the company said this week. Towe has been with GE for 27 years and since 1991 held senior financial roles including CFO for GE Plastics and GE Capital.

MFIC announced that its microfluidics division has named William Beltz as industry marketing manager. Beltz will be responsible for the company’s Microfluidizer processors, primarily in the biotechnology and pharmaceutical sectors, MFIC said, and will also lead the launch of the company’s new high-pressure Multiple Stream Mixer Reactor for the continuous creation of nanoparticles. Beltz has held product management and marketing positions at Applied Biosystems, Schleicher & Schuell, DuPont Biotechnology Systems, and NEN, MFIC said.

Gregory Gosch joins Luminex as vice president of marketing, the company said last week. Gosch was senior director of sales and marketing for Nanogen, and previously at Chiron and Bio-Rad.

The Scan

Pig Organ Transplants Considered

The Wall Street Journal reports that the US Food and Drug Administration may soon allow clinical trials that involve transplanting pig organs into humans.

'Poo-Bank' Proposal

Harvard Medical School researchers suggest people should bank stool samples when they are young to transplant when they later develop age-related diseases.

Spurred to Develop Again

New Scientist reports that researchers may have uncovered why about 60 percent of in vitro fertilization embryos stop developing.

Science Papers Examine Breast Milk Cell Populations, Cerebral Cortex Cellular Diversity, Micronesia Population History

In Science this week: unique cell populations found within breast milk, 100 transcriptionally distinct cell populations uncovered in the cerebral cortex, and more.