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Related Party Transactions (Tables)
6 Months Ended
Jun. 30, 2021
Related Party Transactions  
Schedule of outstanding unpaid accounts payable held by related parties

The following table summarizes outstanding unpaid accounts payable held by related parties as of June 30, 2021 and December 31, 2020 (amount in thousands). These unpaid amounts include part of the expenses reported in the above section and also certain expenses incurred in prior periods.

    

June 30, 2021

    

December 31, 2020

Advent BioServices – amount invoiced

$

1,418

$

3,734

Advent BioServices – amount accrued

1,765

1,629

Accounts payable and accrued expenses to Advent BioServices

$

3,183

$

5,363