Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 11,948,858	$ 22,604,481
Supplies for clinical trials	1,661,658	1,158,632
Other assets	767,020	797,425
Total current assets	14,377,536	24,560,538
Property and equipment, net	143,974	180,922
Supplies for clinical trials	1,067,731	1,115,657
Deposits	3,449,006	4,176,280
Deferred financing costs	228,103	48,977
Total assets	19,266,350	30,082,374
Current liabilities:
Accounts payable	709,167	1,161,258
Accrued compensation and benefits	330,925	790,487
Accrued liabilities	601,658	317,653
Total current liabilities	1,641,750	2,269,398
CIRM liability	4,680,728	4,133,905
Warrant liability	1,063,335	1,958,775
Total liabilities	7,385,813	8,362,078
Commitments and contingencies (Note 5)
Shareholders’ equity:
Common stock, $0.0001 par value; 249,000,000 shares authorized; 93,395,802 and 90,310,149 shares issued and outstanding as of June 30, 2016 and December 31, 2015, respectively	9,340	9,031
Additional paid-in capital	96,971,853	95,849,005
Accumulated deficit	(85,100,656)	(74,137,740)
Total shareholders’ equity	11,880,537	21,720,296
Total liabilities and shareholders’ equity	$ 19,266,350	$ 30,082,374

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).