Abstract: A method of examining a sample includes measuring, as function of wavelength of light elastically scattered from the sample, at least 2 properties, selected from the group consisting of scattering angle theta of the light, scattering angle phi of the light, and polarization of the light. The scattering angle theta is an angle between backward direction and direction of propagation of the light, and scattering angle phi is an angle between incident light polarization and projection of direction of the light propagation onto a plane in which incident electric field oscillates.

Abstract: The present invention is directed to a novel biocompatible polymer that may be used in tissue engineering. More specifically, the specification describes methods and compositions for making and using a citric acid copolymers.

Abstract: A cell delivery device is prepared comprising a controllable degradable gel phase, meshed within a polymer substrate for use in tissue-engineering. The gel phase comprises a degradable, natural or synthetic polymer, and includes a suspension of living cells. The polymer substrate comprises a biocompatible, degradable polymer, and may be synthetic or natural. Degradation of the gel phase may be controlled by enzyme activity or adjustment of gel phase physical properties. In one embodiment, the gel phase contains an enzyme and/or enzyme inhibitor to control degradation of the gel phase. The device is useful in tissue replacement and repair, and more particularly, in the repair of cartilage tissue.

Abstract: A biodegradable polymer comprising a condensation polymer of glycerol and a diacid. The polymer may be adapted for use as a tissue engineering construct. For example, it may be seeded with cells or molecules may be attached to it to modify the metabolism and proliferation of cells or to modify the degradation rate and/or mechanism of the polymer. The polymer may also be exploited in a variety of medical and non-medical applications.

Abstract: Apparatus for removing substances from blood is disclosed. The apparatus includes concentric cylinders defining an annulus therebetween with the inner cylinder adapted for rotation with respect to the outer cylinder. At least one of the cylinders includes a porous membrane covered portion forming a compartment containing an immobilized active species. The active species is adapted to break down or remove the substance. Plasma in blood flowing in the annulus passes through the porous membrane and interacts with the active species either by reaction or binding. Red and white blood cells do not pass through the membrane. In this way, a substance is removed from plasma without exposing blood cells to the active species.