Summary: Protein hyper-interleukin-6, a "designer protein" that has to be produced via genetic engineering, enabled a paralyzed mouse to walk again. Spinal cord injuries caused by sports or traffic accidents often result in permanent disabilities such as paraplegia.

How can the authors of one of the major studies that showed cross-immunity between common cold coronaviruses and CoV-2-SARS forget everything they've published! Yet it is likely that this cross-immunity has kept a large part of the world's population free of Covid infection.