If the reader does not believe that viroids and satellites are distinctive, then surely prions, infectious agents composed only of protein, must impress.
The question of whether infectious agents exist without genomes arose with the discovery and characterization of infectious agents associat... Read More
Fungal contaminant, presumably airborne, seen on a TSA plate after 1 month at refrigerated temperatures. Close up image highlights exudate, water droplets due to respiration. Read More