Lactate is formed in all EXCEPT:
Lactate is formed in the Brain in negligible amounts as compared to the other three organs/cells mentioned here. So the best option to choose here is Brain. Lactate Lacate is the end product of anaerobic glycolysis. But brain has mainly aerobic glycolysis So, glucose is main fuel for the brain majority of the times. But during Traumatic brain injury, high lactate is formed in brain due to hypoxia it is used as fuel for brain cells. Lactate is formed in abundance in Testis, Lens, RBCs
Testis
Lens
Brain
RBCs
Glycolysis