MCET doesn't have a license agreement with anyone. This includes Sekisui XenoTech. If a company is using the Fa N2-4 immortalized Human Hepatocytes Cell Lines without a license agreement like Sekisui XenoTech, they are Infringing on MCET's Patent. Regardless if it's shrink-wrapped or not It's still MCET Patent. Link to read MCETs Patent. https://patents.google.com/patent/WO2006041488A1/en