"Møllgård et al. found a fourth meningeal layer called the subarachnoid lymphatic-like membrane (SLYM). SLYM is immunophenotypically distinct from the other meningeal layers in the human and mouse brain and represents a tight barrier for solutes of more than 3 kilodaltons, effectively subdividing the subarachnoid space into two different compartments."

#Immunology #Neuroimmunology

https://www.science.org/doi/10.1126/science.adc8810