If samples need to be stored after collection, we recommend storing them at -70 C or lower, pref- erably after being frozen in liquid nitrogen
In endurance events, where glycogen depletion is a limiting factor, maximizing fat utilization can provide a more sustainable energy source, potentially delaying fatigue
For the latter question, we present specific mutations of MGST1 influencing catalysis
Severe deficiency can contribute to fatty liver changes, which is one reason choline gets framed as liver support. Details are summarized in the NIH ODS Choline fact sheet for health professionals
Ruiz De Almodovar C, Lambrechts D, Mazzone M, Carmeliet P (2009) Role and therapeutic potential of VEGF in the nervous system