Ok - initial search for 'mitochondrial function gives up 203382 items.
Then, you can filter by free text or review.
Either way - all you get are abstracts for the most part - not full reports.
Your search, if you check it again, is already filtered down to the National Library of Medicine, where you do get available full articles.
The difference in the search without the filtering shows just how much you cannot access. (It’s a LOT.)
