Complex sentence: The most cited paper of all time was published in the journal by Oliver H. Lowry on "Protein measurement with the Folin phenol reagent" and describes the Lowry protein assay, and has been cited well-over 300,000 times.
Split into simpler sentences: The most cited paper of all time has been published in the journal. It details the Lowry protein assay, and has been cited well-over 300,000 times.