cells
The ratio of IL-1ra/IL-1beta       was elevated in LPS-stimulated cells from RA patients only: 2.0 versus 1.3       (P=0.02).
The ratio of IL-1ra/ @OBJECT$        was elevated  @PREDICAT$  LPS-stimulated  @SUBJECT$  from RA patients only: 2.0 versus 1.3       (P=0.02).