In order to secure funding to develop the anti-IgE program, the Changs were busily engaged throughout 1989 in trying to find a corporate partner among about 25 pharmaceutical and biotech companies, who were willing to meet with them, to co-develop the anti-IgE therapeutic program. In 1990, Tanox signed a corporate partnership with Ciba-Geigy (Ciba-Geigy merged with Sandoz to form Novartis in 1996) to jointly develop the anti-IgE program. The companies named the antibody candidate CGP51901 (CGP short for "Ciba-Geigy Product"), which humanized form was later created and named TNX-901 or talizumab. With the funding from Ciba-Geigy, Tanox established a 500-liter cGMP bioreactor plant in a space adjacent to the research laboratories in the warehouse building and produced CGP51901 for phase I and II clinical trials.