RETN and Insulin resistance: In this regard, it is also important to note that three additional prominent adipokines in mammals: resistin (RETN), omentin (ITLN1) and plasminogen activator inhibitor-1 (PAI-1), which are implicated in the control of insulin resistance and inflammation are missing from the chicken genome assembly [14], and were not identified by our thorough search in RNA-seq data of adipose tissue [19].