It's ok. First a redirect to https://linkinghub.elsevier.com/retrieve/pii/S0006349521004549 https://linkinghub.elsevier.com/retrieve/pii/S00063495210045... the

It's ok. First a redirect to https://linkinghub.elsevier.com/retrieve/pii/S0006349521004549 https://linkinghub.elsevier.com/retrieve/pii/S00063495210045... then some javascript shenanigans then jumps to https://www.biophysj.org/retrieve/pii/S0006349521004549 https://www.biophysj.org/retrieve/pii/S0006349521004549 then to https://www.cell.com/biophysj/retrieve/pii/S0006349521004549 https://www.cell.com/biophysj/retrieve/pii/S0006349521004549 and finally https://www.cell.com/biophysj/pdf/S0006-3495(21)00454-9.pdf https://www.cell.com/biophysj/pdf/S0006-3495(21)00454-9.pdf Going directly to the final PDF URL works as of right now but the previous URL is probably better in case they publish another revision. The paper is not yet final. Cell.com belongs to Elsevier.