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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Cash flows from operating activities    
Net loss $ (8,303,871) $ (5,696,637)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization expense 436,880 329,561
Interest paid on the conversion of debt to equity   20,496
Common stock issued in exchange for services rendered   6,425
Loss on extinguishment of debt 1,941,960  
Amortization of operating lease right-of-use-assets 56,575  
Stock-based compensation 426,508 272,243
Amortization of debt issuance costs and debt discount 178,180 403,824
Change in fair value of warrants, conversion option and derivative liability 46,057 267,854
Changes in assets and liabilities    
Accounts receivable 80,925 104,849
Other receivable 3,822 (1,034)
Inventory 382,130 (255,703)
Prepaid expenses and other current assets 149,929 130,694
Other non-current assets 27,172  
Deferred collaboration revenue   (177,389)
Operating lease liabilities (93,235)  
Accounts payable 1,149,632 (4,192,753)
Accrued expenses 51,762 (834,123)
Total cash used in operating activities (3,465,574) (9,621,693)
Cash flows from investing activities    
Purchase of equipment   (6,527)
Total cash used in investing activities   (6,527)
Cash flows from financing activities    
Proceeds from issuance of notes payable 800,000  
Proceeds from issuance of long term debt   2,310,000
Repayment of notes payable (100,000) (1,689,199)
Proceeds from issuance of common stock through a stock purchase agreement with a private investor November 2017   1,305,774
Issuance of common stock, January 2019, net 266,266  
Total cash provided by financing activities 3,469,161 16,676,677
Net increase in cash 3,587 7,048,457
Cash at beginning of period 2,568,191 759,867
Cash at end of period 2,571,778 7,808,324
Supplemental schedule of non-cash financing and investing activities    
Interest paid on long-term debt   19,344
Deemed dividend attributable to preferred stock   995,000
Repayment of accrued interest on note payable by issuance of common stock 446,729  
Repayment of Note Payable principle by issuance of common stock 4,374,108  
Issuance of March 2019 letter of credit warrant $ 116,297  
Issuance of warrants with Notes Payable 892,713  
Private Investment in Public Entities December 2017    
Cash flows from financing activities    
Proceeds from the issuance of common stock   750,100
Private Investment in Public Entities March 2018    
Cash flows from financing activities    
Proceeds from the issuance of common stock   5,000,000
Proceeds from the issuance of convertible preferred stock, March 2018   9,199,002
Issuance costs associated with the issuance of convertible preferred stock, March 2018   (199,000)
Private Investment in Public Entities January to March 2019    
Cash flows from financing activities    
Proceeds from the issuance of common stock $ 2,502,895  
Jaguar Notes Payable    
Supplemental schedule of non-cash financing and investing activities    
Common stock issued as redemption of notes payable and related interest   950,000
Napo convertible debt    
Supplemental schedule of non-cash financing and investing activities    
Common stock issued as redemption of notes payable and related interest   $ 1,158,308