Aerva lanata (AL) whole plant was extracted with petroleum ether. Petroleum ether extracts showed significant cytotoxic activity when tested for its effect on mitosis in Allium cepa root tips. The 3 days old Allium cepa roots showed inhibition of mitosis when treated with petroleum ether extract of AL in a concentration dependent manner. The present investigation revealed that the petroleum ether extract of AL significantly inhibited the mitosis in onion root tips.
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