smooth muscle cells
This increased reactivity to pressor factors may be due to an       inadequate nitric oxide generation by vascular endothelium and to increased       sodium and calcium concentration in vascular smooth muscle cells.
This increased reactivity to pressor factors may be due to an       inadequate nitric oxide generation by vascular endothelium and to increased       sodium and  @OBJECT$  concentration  @PREDICAT$  vascular  @SUBJECT$ .