| 2018年 12月31日 | 2019年 12月31日 | 2020年 12月31日 | 2021年 12月31日 | 2022年 12月31日 |
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Cash and cash equivalents | - | 44 | 75 | 64 | 52 |
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Marketable securities | 18 | 15 | 10 | - | 25 |
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Accounts receivable | - | 754,898 | 1 | 3 | 57,252 |
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Prepaid expenses and other current assets | 1 | 860,107 | 1 | 954,792 | 841,217 |
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Total current assets | 41 | 61 | 88 | 68 | 77 |
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Property and equipment, net | 3 | 2 | 2 | 2 | 1 |
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Operating lease right-of-use assets | - | 5 | 7 | 10 | 9 |
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Deposits | 1 | 3 | 3 | 3 | 3 |
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Restricted cash | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 |
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Other long term assets | 808,729 | 673,625 | 401,667 | 140,000 | 128,333 |
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Total assets | 45 | 72 | 100 | 83 | 91 |
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Accounts payable | 2 | 882,666 | 2 | 3 | 3 |
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Accrued expenses | 2 | 2 | 3 | 5 | 4 |
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Research And Development Contract Liability Current | 2 | 4 | 7 | 645,345 | - |
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Operating Lease, Liability, Current | - | 4 | 5 | 5 | 3 |
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Other Long-Term Debt, Current | - | - | - | - | 2 |
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Total current liabilities | 6 | 12 | 16 | 13 | 12 |
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Research And Development Contract Liability Noncurrent | 5 | 4 | 2 | - | - |
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Operating Lease, Liability, Noncurrent | - | 1 | 2 | 5 | 6 |
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Long-term debt, net | - | - | - | - | 8 |
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Total liabilities | 11 | 17 | 21 | 18 | 26 |
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Common Stock, Value, Issued | 20,697 | 26,562 | 30,351 | 32,202 | 43,042 |
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Additional paid in capital | 106 | 163 | 232 | 263 | 316 |
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Accumulated other comprehensive income | -10,958 | -10,321 | 7,131 | - | -95,873 |
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Accumulated deficit | -71,801,161 | -108,500,118 | -153,285,039 | -197,446,214 | -250,456,596 |
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Total stockholders’ equity | 34 | 55 | 79 | 65 | 66 |
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Total liabilities and stockholders’ equity | 45 | 72 | 100 | 83 | 91 |
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