brain osmolality ( osm ) ( 343 mosmol/kg h ( 2 ) o ) was similar to that of cerebrospinal fluid ( csf ) ( 340 mosmol/kg ) , but increases in the concentration of na+ , k+ , cl- , glucose , sorbitol , lactate , urea , myoinositol , and amino acids accounted for only about half of this increase .
C0006104
brain
C0086045
concentration