The 30-share Sensex ended up 292 points at 29,571 and the 50-share Nifty closed up 75 points at 8,910.
Scientists around the world, including in India, suggest it hasn't been tested properly given the time constraint and there may not be enough evidence to prove its efficacy.
Short-covering and the propping up of net asset values have potential to boost frontline as well as second-rung names next week
Roadshows will be held in Singapore, Hong Kong, London, New York and Boston, NTPC gained close to 1%.
Investors will maintain a cautious stance.
