細胞を液体培地と空気（ガス）の両方に接する状態で培養する手法である。主に上皮細胞（特に気道・皮膚・腸管など）や3D組織モデルの成熟と機能発現に用いられる。

This is a method of culturing cells in a state where they are in contact with both liquid medium and air (gas). It is primarily used for the maturation and functional expression of epithelial cells (particularly those of the airways, skin, and intestines) and 3D tissue models.