Human nasal polyp samples are tissue specimens obtained from nasal polyps, which are non-cancerous growths in the nasal passages or sinuses often associated with chronic inflammation. These samples are valuable for research into chronic rhinosinusitis with nasal polyps (CRSwNP), a common inflammatory disease of the upper airways. Studies using nasal polyp tissue can investigate the underlying immunological, cellular, and molecular mechanisms of polyp formation, inflammation, and response to treatment. They provide a direct source for analyzing immune cell infiltration, cytokine profiles, and epithelial barrier dysfunction relevant to chronic airway inflammation.