lung anatomy 3d model

High-quality 3D medical model of human lungs with a focus on bronchiectasis, 360-degree view, isolated on a neutral background. The model should feature a cutaway or semi-transparent view of the lower lobes. Highlight the bronchial tree showing 'signet ring' signs (dilated bronchi wider than adjacent blood vessels) and 'tram-track' wall thickening. Include visual representations of mucoid impaction (thick yellow/green mucus) inside the enlarged, sac-like bronchial structures. The texture should be realistic: healthy lung tissue in soft pink vs. inflamed, fibrotic areas in grayish-toned textures. Clean topology, ready for real-time 3D rendering, medical visualization style. The texture should be realistic: healthy lung tissue in soft pink vs. inflamed, fibrotic areas in grayish-toned texture