Chromosome breaks per cell in rasayana and A) EMS- B). MMS-treated mouse bone marrow cells at different recovery times. EMS or MMS alone (positive controls) elicited high frequencies of breaks per cells whereas the animals without any treatment (negative controls) showed very less frequencies of breaks per cells. Rasayana 1 and 2 produced insignificant (p >0.05) breaks per cell compared to controls. The combined treatments of Rasayana1 and EMS; Rasayana 2 and EMS or Rasayana 1 and MMS; Rasayana 2 and MMS showed significant (p <0.05) reduction in the frequencies of breaks per cell at 24 h, 48 h and 72 h recovery times.