Lab 2: Protective effect of Chinese herbs in dieta adenine-induced chronic renal failure in rat Total 10 Marks] (11: Calculate the concentration of blood urea nitrogen of each treatment group with the use of standard curve data. Express the data as Mean 1 SD (3 Marks) Standard Curve: Tube No. 1 2 3 4 5 6 ' WW\" ---- Absorbance (540nm) 0.181 0.365 m 0.952 1.412 Treatment Group: Treatment Group Group Absorbance [540nm) Number Rats fed with normal diet 1 0.164 0.164 0.160 0.158 and drinking water (Control) Rats administered with WH30+ in drinking water throughout the experiment Rats given adenine excessive diet (0.04%) for 14 days Rats given adenine 4 0.785 0.758 0.766 0.757 excessive diet (0.04%) and treated with WH30+ in drinking water until the end of the experiment