This resource provides access to specialized cell culture media formulations essential for the optimal growth and differentiation of Human Bronchial Epithelial (HBE) cells. The offering includes two distinct media types: Bronchial Epithelial Cell Growth Medium (BEGM) for submerged culture on plastic and Air-Liquid Interface (ALI) medium for culture on porous filters, each tailored to specific HBE cell culture needs. BEGM (Bronchial Epithelial Cell Growth Medium) is specifically designed to support the proliferation and maintenance of primary HBE cells when cultured on plastic surfaces. It is typically serum-free and optimized for cells from both normal and diseased tissues. Commercial versions, such as Lonza's BEGM BulletKit, often include a basal medium supplemented with a precise blend of growth factors and supplements like bovine pituitary extract (BPE), hydrocortisone, human epidermal growth factor (hEGF), epinephrine, transferrin, insulin, retinoic acid, triiodothyronine, and GA-1000. This formulation ensures robust cell growth and health in standard submerged culture conditions. ALI (Air-Liquid Interface) Medium is formulated to promote the mucociliary differentiation of HBE cells when cultured on porous filter inserts (e.g., Transwells). This medium supports the development of a pseudostratified epithelium that closely mimics the in vivo human airway, characterized by the presence of ciliated cells, mucus-secreting goblet cells, and functional tight junctions. Examples include STEMCELL Technologies' PneumaCult™-ALI or Lonza's B-ALI™ media, which are optimized to induce this complex differentiation, leading to stable transepithelial electrical resistance and physiological relevance. These specialized media are crucial for various applications, including routine HBE cell culture, establishing and maintaining highly differentiated airway models, disease modeling (e.g., cystic fibrosis, asthma, COPD), drug screening, and toxicology studies. They enable researchers to create and sustain physiologically accurate in vitro models of the human airway, which are vital for understanding respiratory diseases and developing new therapeutic strategies. The availability of these specialized media ensures optimal cell health, promotes proper differentiation, and reduces experimental variability, providing a reliable and consistent environment for HBE cell research. Their specific formulations address the unique nutritional and environmental requirements of bronchial epithelial cells, facilitating the creation of complex and functional airway models.