article 8 cell strain COS7 controlled study 8 Animals 6 Cercopithecus 6 Cercopithecus aethiops 6 animal 6 cell assay 6 cell culture 6 cell strain BHK 6 genetic transfection 6 21 hemisuccinate 6,19 epoxyprogesterone 4 21 hydroxy 6,19 epoxyprogesterone 4 COS Cells 4 Cell Line 4 DNA 4 DNA drug complex 4 Dimerization 4 Electrophoretic Mobility Shift Assay 4 Immunoprecipitation 4 Models, Molecular 4 Molecular Dynamics Simulation 4 Protein Binding 4 Receptors, Glucocorticoid 4 Steroids 4 animal cell 4 binding affinity 4 cell line 4 cell strain COS1 4 cell strain L 929 4