<br/> <br/>The Health condition of ailing Marxist leader and former West Bengal Chief Minister Mr. Jyoti Basu has remained critical. According to medical bulletin, his heart and kidney function have been deteriorated. Oxygen requirement of Mr. Basu has been increased. He is still put under ventilation. A team of Doctors is constantly keeping watch on his health. The veteran Communist leader Mr. Jyoti Basu was admitted to a private hospital in Kolkata on 1st of this month following attack of Pneumonia.