rat liver nuclear matrix contains high-affinity ( kd = 10 ( -9 ) m ) [ 3h ] tamoxifen binding sites present in 5-fold higher concentrations ( 4.18 pmol/mg dna ) than in intact nuclei ( 0.78 +/- 0.10 ( s.d . ) pmol/mg dna ) .
C0028581
nuclear matrix
C0007610
nuclei