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Research and Development Costs
9 Months Ended
Sep. 30, 2023
Research and Development [Abstract]  
Research and Development Costs

4. Research and Development Costs

 

A summary of research and development costs for the three months and nine months ended September 30, 2023 and 2022, including costs associated with clinical trials involving the Company’s lead clinical compound LB-100, are summarized below based on the respective geographical regions where such costs have been incurred.

 

   2023   2022   2023   2022 
  

Three Months Ended

September 30,

  

Nine Months Ended

September 30,

 
   2023   2022   2023   2022 
                 
United States  $68,315   $161,744   $291,846   $316,565 
Spain   9,496    1,246    283,035    348,850 
China   3,108    63,330    17,198    81,050 
Netherlands   51,568    46,068    156,950    149,184 
Total  $132,487   $272,388   $749,029   $895,649