A cell's response is not the same when placed on a rigid compared to a soft matrix. Indicate whether each of the following is expected to occur in a cell that is placed on a rigid matrix (R) or a soft matrix (S). Your answer would be a three-letter string composed of letters R and S only, e.g. RSR. ( ) More tension is generated in cell-matrix contacts. ( ) More vinculin proteins would bind to the C-terminal tail of talin. ( ) More actin filaments are recruited to the site of cell-matrix adhesion.