Frontiers Dietary supplementation with L carnitine elevates intracellular carnitine levels and affects gene expression of SLC25A20 and COX4I1, as well as non mitochondrial respiration of bovine blood cells during systemic immune challenge Can L Carnitine Support Energy Levels and Exercise Recovery for Long COVID and ME CFS Patients? RTHM Mitochondrial dysfunction: mechanisms and advances in therapy Signal Transduction and Targeted Therapy Machine learning guided discovery of SLC25A45 as a mediator of mitochondrial methylated amino acid import and carnitine synthesis: Cell Metabolism