Immunostaining for thromboxane synthase (TS) and receptor (TR). Co-staining for TS and SMA (A) demonstrated localization in the vascular smooth muscle, and no obvious differences between groups; 1) control, 2) NAP, and 3) CBX. Immunostaining for TR and SMA (B) also showed localization in the vascular smooth muscle and no major differences in expression levels between groups; 1) control, 2) NAP, and 3) CBX.