Figure 3: Effect of different drug concentration on Allium cepa root growth number and length. (φ) N = 4 and (σ) N=40. Group I - Normal control (distilled water), Group II - water + cyclophosphamide (10 mg/ml in distilled water), Group III - (n-Butanol fraction of Tinospora cordifolia [NBTC] 10 mg/ml in distilled water), Group IV - NBTC (15 mg/ml in distilled water), Group V- NBTC and cyclophosphamide (5 + 10 mg/ml in distilled water), Group VI - NBTC and cyclophosphamide (10 mg/ml each in distilled water) and Group VII - NBTC and cyclophosphamide (15 + 10 mg/ ml in distilled water). ^*P < 0.05, ^**P < 0.01, ^***P < 0.001 when compared with normal control. aP < 0.05 and cP < 0.001 when compared with negative control, cyclophosphamide (10 mg/ml)