Exploiting Signal Joint T Cell Receptor Excision Circle to Investigate the Impact of COVID-19 and Autoimmune Diseases on Age Prediction and Immunosenescence oleh Amina A. Farag, Taghrid G. Kharboush, Noha H. Ibrahim, Mohamed Darwish, Iman M. Fawzy, Hanaa El-Sayed Bayomy, Dina Saad Abdelmotaleb, Shaza Abdul Basset Abdul Basset, Amal M. Abdel-Kareim, Mohammed Al mohaini, Inas A. Ahmed, Haidy M. Fakher