Atomic force microscopy characterization of collagen 'nanostraws' in human costal cartilage

► We describe characterization of collagen nanostraws in costal cartilage. ► We measured Young's Modulus of elasticity of these structures. ► This information is important in biomechanical studies of costal cartilage relevant to the formation of chest wall deformities. ► This information is crucial in understanding microfluidic flow in these structures.