Original sentence: The following sections describe several hypotheses: some pertain to the composition of the infectious agent (protein-only, protein with other components, virus, or other), while others pertain to its mechanism of reproduction.Whether prions cause disease or are merely a symptom caused by a different agent is still a matter of debate and reearch
Edited sentence: The following sections describe several hypotheses: Some pertain to the composition of the infectious agent (protein-only, protein with other components, virus, or other), while others pertain to its mechanism of reproduction.Whether prions cause disease or are merely a symptom caused by a different agent is still debated by a minority of researchers