A continuously programmable Blind Spot Detection System for vehicles that use continuous vision sensor input to determine lane offset and determine a maximum range limit for radar sensors to define an area of interest for declaration of objects within the blind spot area. A comparison clock is generated by an oscillator whose effective capacitance is varied by a second, lower speed oscillator connected to the capacitance. A distal portion of an upper arm of each ejector latch lies on opposite sides of the plane, such that the ejector latches interleave when either ejector latch is pivoted to an open position. Preferably, the optical gain fiber is a highly non-linear optical fiber having a non-linearity constant of at least 10Wkm. A method for checking the secured object is by means of such a device. In vitro and in vivo methods for inducing lineage determination, propagating andor inducing or maintaining the genesis of neurons, oligodendrocytes, astroglial cells from progenitor cells, stem cells andor cells derived from said cells by administrating to the cells a substance that increases the concentration of growth hormone.