Anti-diabetic efficacy and impact on amino acid metabolism of GRA1, a novel small-molecule glucagon receptor antagonist. oleh James Mu, Sajjad A Qureshi, Edward J Brady, Eric S Muise, Mari Rios Candelore, Guoqiang Jiang, Zhihua Li, Margaret S Wu, Xiaodong Yang, Qing Dallas-Yang, Corey Miller, Yusheng Xiong, Ronald B Langdon, Emma R Parmee, Bei B Zhang