DSM Biologics and Crucell N.V. (Euronext, NASDAQ: CRXL; Swiss Exchange: CRX) announced today that the high-titer fed-batch process developed at the PERCIVIA PER.C6® Development Center, their joint venture in Cambridge, USA was recently scaled up to 250 liters by DSM Biologics scientists at their GMP facility in Groningen, The Netherlands. They successfully achieved 8 grams per liter for an IgG expressed by PER.C6® cells using chemically defined cell culture medium in a SUB (single-use bioreactor).

This result confirms a reliable, versatile and commercially feasible production platform to manufacture large amounts of therapeutic proteins with ease and economic affordability. Also, this latest result, using conventional fed-batch process, adds to the previous achievements of 27 grams per liter - biomass corrected - using DSM's XD(TM) technology, and demonstrating a reliable performance of the PER.C6® cell line under such production conditions.

Marco Cacciuttolo, CEO and President of PERCIVIA, comments that "This new development further strengthens our commitment to modernize therapeutic protein manufacturing. The successful scale up of the high titer fed-batch process means that the PER.C6® platform can be easily and quickly implemented into commercial facilities with no retrofit requirements. We continue to be very pleased and enthused by the ease of use, the reproducibility, and the overall robustness of the platform."

About PER.C6® Technology
Crucell's PER.C6® technology platform has been developed for the large-scale manufacture of biopharmaceutical products such as recombinant proteins including monoclonal antibodies. Compared to conventional production technologies, the strengths of PER.C6® technology lie in its excellent safety profile, scalability and productivity under serum-free culture conditions.

About XD(TM) technology
DSM's XD(TM) technology has been developed as a proprietary system to drive yield improvements in mammalian systems. "XD" stands for extreme density, as the process is able to push the cell density within the bioreactor to maximum productivity.

About PERCIVIA
PERCIVIA PER.C6® Development Center, a joint venture between DSM and Crucell, develops the PER.C6® human cell line for the expression of recombinant proteins. PERCIVIA provides solutions for protein production to licensees of PER.C6® technology. PERCIVIA houses dedicated staff working in state-of-the-art laboratories with sufficient space to afford PER.C6® users a hands-on experience of our technology.

About Crucell
Crucell N.V. (Euronext, NASDAQ: CRXL; Swiss Exchange: CRX) is a global biopharma company focused on research, development, production and marketing of vaccines, proteins and antibodies that prevent and treat primarily infectious diseases. Its vaccines are sold in public and private markets worldwide. Crucell's core portfolio includes a vaccine against hepatitis B, a fully-liquid vaccine against five important childhood diseases and a virosome-adjuvanted vaccine against influenza. Crucell also markets travel vaccines, such as the only oral anti-typhoid vaccine, an oral cholera vaccine and the only aluminum-free hepatitis A vaccine on the market. The Company has a broad development pipeline, with several product candidates based on its unique PER.C6® production technology. The Company licenses its PER.C6® technology and other technologies to the biopharmaceutical industry. Important partners and licensees include DSM Biologics, sanofi-aventis, Novartis, Wyeth and Merck & Co. Crucell is headquartered in Leiden, the Netherlands, with subsidiaries in Switzerland, Spain, Italy, Sweden, Korea and the US. The Company employs over a 1000 people. For more information, please visit www.crucell.com.