A liquid crystal lens which controls an optical path and a display which includes the liquid crystal lens. The liquid crystal composition of the present invention provides a liquid crystal composition that has sufficiently low viscosity, sufficiently low rotational viscosity, high elastic modulus, and negative dielectric anisotropy with a large absolute value without decreasing the refractive index anisotropy and nematic phase-isotropic liquid phase transition temperature. A display device is in data communication with the processor and configured to display the digital content according to the programming instructions. The flame transfers heat to a heat exchanger in communication with and positioned between the burner assembly and the inducer. A chimeric protein is expressed in which a transcriptional factor comprising the amino acid sequence shown in SEQ ID NO: 2, 4, or 6 is fused to a functional peptide that converts an arbitrary transcriptional factor into a transcriptional repression factor.