Glucose-responsive insulin delivery systems that mimic pancreatic endocrine function could enhance health and improve quality of life for people with type 1 and type 2 diabetes with reduced β-cell function. Recently, a research team led by Zhen Gu, a professor of bioengineering at the UCLA Samueli School of Engineering and a member of CAB, developed a smart insulin-delivery patch that could one day monitor and manage glucose levels in people with diabetes and deliver necessary insulin dosage. In the experiments, one quarter-sized patch successfully controlled glucose levels in pigs (> 25 kg) with type I diabetes for about 20 hours. A study describing the research in which the patch was published in Nature Biomedical Engineering (https://doi.org/10.1038/s41551-019-0508-y).