passages.id: split_4_test_2287_passage
passages.type: progene_text
passages.text: A comparison of the sensitivity to inhibition by zinc of GABA(A) receptors in SVZa precursor cells and in CHO - K1 cells expressing various combinations of recombinant GABA ( A ) receptor subunits suggested that the gamma 2S subunit was present and functional in the GABA ( A ) receptor chloride channel complex .