27 Oct 2015 --- In recent years, patients with pulmonary emphysema have been increasing mainly among middle-aged and elderly males due to aging and excessive smoking. Emphysema makes brittle lungs, and in severe cases, holes develop in the lung tissue, causing air leakage. Researchers at NIMS developed a new sealant to close holes developed in lungs and blood vessels using Alaska pollock gelatin. In the paper published in the Journal of Biomedical Nanotechnology, they reported that the sealant is about 12 times stronger than conventional sealants and is able to resist pressure as high as approximately 2.8 times the normal blood pressure.