Variability in SARS-CoV-2 Spike Protein Sequences: Impact on Receptor Binding and Immunotherapeutic Strategies. - Riaz, Aqsa; Ur Rehman, Irshad; Ahmad, Jamshaid; Ullah, Amin; Khattak, Saeed Ullah; Alshaya, Dalal Sulaiman; Fayad, Eman; Eid, Refaat A.; Eldeen, Muhammad Alaa (Journal of Computational Biophysics & Chemistry, 2025)