Abstract: The present invention provides antigen-binding polypeptides, including bi-specific antigen-binding polypeptides, that specifically bind to a first and a second target antigen with high affinity. The present invention also provides novel antigen-binding polypeptides that specifically bind to HER2 and antagonize HER2 activation. The invention also provides nucleic acids encoding the antigen-binding polypeptides, recombinant expression vectors and host cells for making such antigen binding polypeptides. Methods of using antigen-binding polypeptide of the invention to treat disease, including cancer, are also encompassed by the invention.

Abstract: Provided are methods and compositions for the production of novel antibodies that bind specifically to a target antigen. These methods and compositions are particularly useful for producing antibodies having the antigen binding specificity of a reference antibody but with improved properties (e.g., binding affinity, immunogenicity, and thermodynamic stability) relative to the reference antibody.

Abstract: The invention provides methods and compositions for identifying binding polypeptides (e.g., antibodies or antigen binding fragments thereof) that specifically binds to a cell-surface antigen. The methods of the invention generally comprise contacting a variegated nucleic acid-display library of binding polypeptides with a cell-surface antigen displayed on the exterior surface of a cell; and isolating from the library at least one library member that specifically binds to the cell-surface antigen on the exterior surface of the cell.

Abstract: Provided are methods and compositions for identifying binding polypeptides (e.g., antibodies or antigen binding fragments thereof) that specifically binds to a cell-surface antigen. The methods of the invention generally comprise contacting a variegated nucleic acid-display library of binding polypeptides with a cell-surface antigen displayed on the exterior surface of a cell; and isolating from the library at least one library member that specifically binds to the cell-surface antigen on the exterior surface of the cell. Also provided are novel nucleic acid display libraries (e.g., DNA display libraries) useful in the methods of the invention.

Abstract: The invention provides methods and compositions useful for identifying polypeptides with desired characteristics in vitro.

Abstract: The present invention provides binding polypeptides (e.g., antibodies or fragments thereof) that specifically bind to a target antigen (e.g., a human antigen, e.g., human PDGFR?) with high affinity. The invention also provides, libraries of binding polypeptides, pharmaceutical compositions, as well as nucleic acids encoding binding polypeptides, recombinant expression vectors and host cells for making such binding polypeptides. Methods of using binding polypeptide of the invention to diagnose and treat disease are also encompassed by the invention.

Abstract: The invention provides methods for identifying modulators of ion channels without the use of recombinant cell lines over-expressing the ion channel proteins or the use of detection labels.

Abstract: Provided are methods and compositions for the production of novel antibodies that bind specifically to a target antigen. These methods and compositions are particularly useful for producing antibodies having the antigen binding specificity of a reference antibody but with improved properties (e.g., binding affinity, immunogenicity, and thermodynamic stability) relative to the reference antibody.

Abstract: The present invention provides binding polypeptides (e.g., antibodies or fragments thereof) that specifically bind to a target antigen (e.g., a human antigen, e.g., human PDGFR?) with high affinity. The invention also provides, libraries of binding polypeptides, pharmaceutical compositions, as well as nucleic acids encoding binding polypeptides, recombinant expression vectors and host cells for making such binding polypeptides. Methods of using binding polypeptide of the invention to diagnose and treat disease are also encompassed by the invention.

Abstract: The invention provides methods and compositions useful for identifying polypeptides with desired characteristics in vitro.

Abstract: Provided are methods and compositions for identifying binding polypeptides (e.g., antibodies or antigen binding fragments thereof) that specifically binds to a cell-surface antigen. The methods of the invention generally comprise contacting a variegated nucleic acid-display library of binding polypeptides with a cell-surface antigen displayed on the exterior surface of a cell; and isolating from the library at least one library member that specifically binds to the cell-surface antigen on the exterior surface of the cell. Also provided are novel nucleic acid display libraries (e.g., DNA display libraries) useful in the methods of the invention.

Abstract: The invention provides methods and compositions for identifying binding polypeptides (e.g., antibodies or antigen binding fragments thereof) that specifically binds to a cell-surface antigen. The methods of the invention generally comprise contacting a variegated nucleic acid-display library of binding polypeptides with a cell-surface antigen displayed on the exterior surface of a cell; and isolating from the library at least one library member that specifically binds to the cell-surface antigen on the exterior surface of the cell.

Abstract: The present invention provides antigen-binding polypeptides (e.g., bi-specific antigen-binding polypeptides) that specifically bind to a first and a second target antigen with high affinity. The present invention also provides novel antigen-binding polypeptides that specifically bind to HER2 and antagonize HER2 activation. The invention also provides nucleic acids encoding the antigen-binding polypeptides, recombinant expression vectors and host cells for making such antigen binding polypeptides. Methods of using antigen-binding polypeptide of the invention to treat disease (e.g., cancer) are also encompassed by the invention.

Abstract: Provided are methods and compositions for the production of novel antibodies that bind specifically to a target antigen. These methods and compositions are particularly useful for producing antibodies having the antigen binding specificity of a reference antibody but with improved properties (e.g., binding affinity, immunogenicity, and thermodynamic stability) relative to the reference antibody.

Abstract: A label-free biosensor detection arrangement incorporating an external cavity laser (ECL) includes a tunable lasing element (e.g. an antireflection coated laser diode or semiconductor optical amplifier) and a narrow bandwidth resonant reflectance filter as the wavelength-selective element for the tunable lasing element. A sample is deposited on the surface of the resonant reflectance filter containing a biological material. The wavelength emitted by the external cavity laser is continuously tunable by binding interactions between the biological material and the resonant reflectance filter or adsorption of the biological material present in the sample on resonant reflectance filter. The narrow bandwidth resonance reflectance filter can take the form of photonic crystal (PC), a Bragg stack, or a Brag fiber reflection filter.

Abstract: The invention provides methods and compositions useful for identifying polypeptides with desired characteristics in vitro.

Abstract: The invention provides methods for identifying modulators of ion channels without the use of recombinant cell lines over-expressing the ion channel proteins or the use of detection labels.

Abstract: The present invention provides binding polypeptides (e.g., antibodies or fragments thereof) that specifically bind to a target antigen (e.g., a human antigen, e.g., human PDGFR?) with high affinity. The invention also provides, libraries of binding polypeptides, pharmaceutical compositions, as well as nucleic acids encoding binding polypeptides, recombinant expression vectors and host cells for making such binding polypeptides. Methods of using binding polypeptide of the invention to diagnose and treat disease are also encompassed by the invention.

Abstract: Tubing such as clear plastic disposable tubing or glass tubing includes a photonic sensor formed in or placed within the tubing. The photonic sensors can take the form of photonic crystal sensors, distributed feedback laser sensors, and surface enhanced Raman spectroscopy (SERS) sensors, including photonic crystal enhanced SERS sensors. Detection arrangements for the sensors are described. The invention has many applications including tubing used in hospital care (e.g., urinary catheters, intravenous fluid delivery tubing, tubing used in dialysis, e.g. heparin lines or blood tubing sets), food manufacturing, pharmaceutical manufacturing, water quality monitoring, and environmental monitoring.

Abstract: The invention provides methods and compositions useful for identifying polypeptides with desired characteristics in vitro.