passages.id: split_8_test_2341_passage
passages.type: progene_text
passages.text: Reduction of Ca2+ in levels by Ca2+ channel blockers ( nifedipine , verapamil , diltiazem , or bepridil ) at concentrations of 100 microM led to 35 to 50 % increases in the cellular uptake of 1 mM [ 14C ] cefixime .