Two very small viruses--a presumptive identification.
Gerdes
G H
GH
D000818:Animals; D001717:Birds / Q000382:microbiology*; D005243:Feces / Q000382:microbiology; D008854:Microscopy, Electron; D013552:Swine / Q000382:microbiology*; D014771:Virion / Q000302:isolation & purification*