Condensed Consolidated Balance Sheets (USD $)	May 31, 2012	Aug. 31, 2011
ASSETS
Cash and cash equivalents	$ 17,760,689	$ 15,172,086	[1]
Restricted cash	168,876	114,468	[1]
Short-term investments	25,381,868	0	[1]
Prepaid expenses and other	2,446,670	415,944	[1]
Total current assets	45,758,103	15,702,498	[1]
Intangible assets, net	3,141,417	3,250,917	[1]
Goodwill	3,275,403	3,275,403	[1]
Fixed assets, net	316,057	76,997	[1]
Deposits	104,906	104,906	[1]
Deferred offering costs	119,592	151,783	[1]
Total assets	52,715,478	22,562,504	[1]
LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
Accounts payable	1,912,321	847,137	[1]
Accrued liabilities	3,006,495	2,249,254	[1]
Common stock warrant liability	19,137,907	23,575,294	[1]
Deferred rent	20,101	24,136	[1]
Capital lease liability - current	7,873	3,953	[1]
Total current liabilities	24,084,697	26,699,774	[1]
Capital lease liability - long-term	15,556	9,778	[1]
Total liabilities	24,100,253	26,709,552	[1]
Stockholders' equity (deficit):
Preferred stock, $0.001 par value, 15,000,000 shares authorized, zero shares issued and outstanding	0	0	[1]
Common stock, $0.001 par value, 150,000,000 shares authorized 49,086,807 and 35,569,188 shares issued and outstanding as at May 31, 2012, and August 31, 2011, respectively	49,089	35,569	[1]
Additional paid-in capital	135,005,481	73,817,083	[1]
Accumulated other comprehensive income (loss)	(15,840)	1,904	[1]
Deficit accumulated during development stage	(106,423,505)	(78,001,604)	[1]
Total stockholders' equity (deficit)	28,615,225	(4,147,048)	[1]
Total liabilities and stockholders' equity (deficit)	$ 52,715,478	$ 22,562,504	[1]

[1] Derived from the Company’s audited consolidated financial statements as of August 31, 2011.