Fig. 6

Representative photomicrographs (a) of cardiac tissue and graph of semi-quantitative analysis of collagen (b). (X)- sections stained with haematoxylin (magnification × 20) and eosin; (Y) - sections stained with picrosirius red stain (magnification × 40); NT- normotensive control; HESS- hydroethanolic extract of S. serratuloides at 150 and 300 mg/kg; CPT-captopril group; LN-L-NAME group. Values are expressed as mean ± SEM. *p < 0.05; **P < 0.01 versus LN control; ###p < 0.001 versus NT control