To overcome the difficulty in obtaining quiescent monocytes , we studied the ability of promonocytic THP-1 cells to activate endothelial cells .
to overcome the difficulty in obtaining quiescent monocytes , we studied the ability of promonocytic thp-1 cells to activate endothelial cells .
O O O O O O B-cell_type I-cell_type O O O O O O B-cell_line I-cell_line I-cell_line O O B-cell_type I-cell_type O