I haven't been able to search this effectively either reddit or Google.

The odd fellow who wants to live forever is willing to trade the 1951 Willie Mays rookie card (which by the way would make any baseball fan shit their pants, now, to say nothing of in the future light years from Earth)... but in return he wants "five liters of anaerobic metabolites suspended in a hydrosaline solution".

Can anyone give me an example of an anaerobic metabolite suspended in a hydrosaline solution?