Abstract: Endothelial cell growth factor is achieved through the application of recombinant DNA technology to prepare cloning vehicles encoding the ECGF protein and procedures are disclosed for recovering ECGF protein essentially free of other proteins of human origin. The product is useful for, among other purposes, diagnostic applications and as potential in the treatment of damaged blood vessels or other endothelial cell-line structures.

Abstract: A method and apparatus for surveying ground terrain from an airborne vehicle is disclosed. According to the method and apparatus, an inertial measurement unit, a position tracking device, and a terrain altimeter are carried by the airborne vehicle in a known vector relationship to one another. The inertial measurement unit provides continuous accelerometer data from which a first determination of vehicle position can be made. Simultaneously, data from the tracking device representative of the position of the tracking device relative to cooperating reflection means on the ground, if within sight of the airborne vehicle, provides, in combination with gimbal angle sensor outputs from the inertial measurement unit, an independent determination of the position of the vehicle. The two position measurements, when available, are continuously compared in real time on board the vehicle and error corrections are generated therefrom by estimation theory.