Lipocalin, lactoferrin, and cystatin C are all components of tears. N-Acetylglucosamine or GlcNAc is a derivative of glucose and is a substrate of OGT--one of the most commonly marked drug/treatments from the O-linked Glycosylation Disorders doc set. Because it is readily available for purchase, Matt Might tested the substance on himself before trying it on Bertrand with surprising results--Bertrand was able to produce some tears. Help us learn more about how GlcNAc can affect lipocalin, lactoferrin, and cystatin C expression by marking these docs. To hear more of the amazing story, checkout the video from the 2015 GoldLab Symposium: https://www.youtube.com/watch?v=_mAIqcb-2b0