quantitative absorption analyses using homogenates of carefully dissected brain subregions , together with an [ 125i ] anti-immunoglobulin binding assay using brain homogenate as target , established that thy-1 was present in large amounts throughout human brain , but the grey matter of cerebrum ( cortical grey matter , caudate nucleus , putamen and thalamus ) had 5-10 times as much thy-1 as white matter .
C0006104
brain
C0007461
caudate nucleus