dna double helix 3d model

Create a premium 3D model of a realistic DNA double helix, not a human body, not a skeleton, no face, no arms, no legs. The model should be a highly detailed medical/genomic DNA structure with smooth twisting strands, realistic molecular rungs, clean scientific proportions, and a polished premium laboratory aesthetic. Style: hyper-realistic 3D medical visualization, cinematic, high-quality topology, clean surface detail, professional biotech look. The DNA helix should look impressive, elegant, and believable, suitable for a medical laboratory/genomic testing website or animation. Make it centered, symmetrical, vertical, and clean, with enough structure for close-up camera movement.