Even as the budget session of Parliament is reconvening on April 15 after a brief recess, the introduction of the much awaited National Biotechnology Regulatory Authority (NBRA) Bill looks doubtful as there are several procedures to be followed before the Bill is finally introduced in Parliament for its nod. If at all the Bill is introduced at the eleventh hour of the session, the chances of discussion on the bill are dim, practically putting the bill into the monsoon session, sources said.