The earliest liquid-form iPlex may be on market in Spring 2007. The frozen-form and liquid-form is exactly the same regarding chem/stability/ingredient. the making process may be diff using E.coli. ITP is using DowPharma tech to make it possible. Patients can simply switch to liquid-form iPlex from frozen iplex. The warehouse raw material will still be used in the process. I don't know how but I know they cannot change iPlex if they want FDA approval.