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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
[1]
Current Assets:    
Cash and cash equivalents $ 3,322 $ 3,218
Accounts receivable 18 112
Inventories 2,082 1,383
Prepaid expenses and other current assets 490 428
Total current assets 5,912 5,141
Property and equipment, net 107 110
Intangible assets, net 44 61
Other assets 94 94
Total assets 6,157 5,406
Current Liabilities:    
Accounts payable 1,018 532
Accrued liabilities 760 846
Total current liabilities 1,778 1,378
Derivative liability 387 0
Warrant liability 39 210
Total liabilities 2,204 1,588
Commitments and contingencies (Note 9)
Series A 8% Senior Convertible Preferred stock, par value $0.0001; 1,250,000 shares authorized; 250,000 and zero shares issued and outstanding as of June 30, 2019 and December 31, 2018 (liquidation preference of $1,016,000 and $0 as of June 30, 2019 and December 31, 2018) 477 0
Stockholders' Equity:    
Common stock, par value $0.0001; 200,000,000 shares authorized; 19,727,431 and 15,366,327 shares issued and outstanding as of June 30, 2019 and December 31, 2018, respectively 2 2
Additional paid-in capital 184,561 179,501
Accumulated other comprehensive loss (58) (45)
Accumulated deficit (181,029) (175,640)
Total stockholders' equity 3,476 3,818
Total liabilities, preferred stock and stockholders' equity $ 6,157 $ 5,406
[1] The condensed consolidated balance sheet as of December 31, 2018 was derived from the audited consolidated balance sheet as of that date.

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