huntington's disease, a neurodegenerative disease due to mutation in the huntingtin gene, htt, conceptual 3d

huntington disease chorea disorder code carcinogen genes spiral medicine technology helix 3d genetic genome biochemistry science damage concept biotechnology medical research dna molecular biology gene chromosome evolution structure mutation clone illustration microscopic molecule sma hereditary syndrome htt neurodegenerative brain huntingtin protein inherited juvenile hyperkinetic movement neuron neuronal degradation degeneration