this site was similar in affinity ( 0.606 microm for membranes and 0.959 microm for intact cells ) to a low-affinity site observed with rat brain membranes ( 1.79 microm ) but was present at a much greater density in astrocytes ( 1610 pmoles/mg protein for membranes and 672 for intact cells versus 53 pmoles/mg protein in brain ) , and may have prevented detection of the high-affinity site .
C0025252
protein
C0033684
protein