anchor.diff:                  //if first column hasn't been changed, update row
                   if (data[i][0] == row_data[0]){
                       sample_table.fnUpdate(row_data, i, 0);
  -                    break;
                   }
                   //if the first column is updated, refresh the table
                   else{
  
positive.code:                 if (data[i][0] == row_data[0]){
                      for (var j =2; j<row_data.length; j++){
                          strain_table.fnUpdate(row_data[j], i, j);
                      break;
                      }
                  }
                  //if the first column is updated, refresh the table
  
negative.code:                 if (data[i][0] == row_data[0]){
                      for (var j =2; j<row_data.length; j++){
                          specimen_table.fnUpdate(row_data[j], i, j);
                      }
                  }
                  //if the first column is updated, refresh the table
  