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Research and Development (Tables)

6 Months Ended

Jun. 30, 2023

	Three Months Ended June 30,				Six Months Ended June 30,
		2023		2022		2023	2022
Outsourced service ⁽ⁱ⁾	$	20,063,536	$	8,812,089	$	39,500,865	$	16,957,952
Payroll costs		1,662,937		1,554,360		3,698,721		2,310,728
Other expenses		94,782		50,829		150,007		263,285
Total	$	21,821,255	$	10,417,278	$	43,349,593	$	19,531,965

(i) For the three months ended June 30, 2023 and 2022, $17,233,228 and $8,329,134 and for the six months ended June 30, 2023 and 2022 $32,322,056 and $15,665,298, were charged under the MSA contract, respectively. Refer to Note 5 for additional information regarding the MSA.