Accounts Payable

12 Months Ended

Dec. 31, 2021

Accounts Payable

Accounts Payable

6. Accounts Payable

As of December 31, 2021, current liabilities included accounts payable of $0.1 million, comprised primarily of legal and patent fees and expenses related to manufacturing totaling $0.1 million. As of December 31, 2020, current liabilities included accounts payable of $0.1 million, comprised primarily of investor relations expenses and legal and patent fees of $0.1 million.