Zhang Y, Yao L, Shen K, Xu M, Zhou P, Yang W, Liu X, Qin X. Genetically engineered K cells provide sufficient insulin to correct hyperglycemia in a nude murine model. Acta Biochim Biophys Sin (Shanghai). 2008 Feb;40(2):149–57. doi: 10.1111/j.1745-7270.2008.00387.x. PMID: 18235977.