S9 fraction

https://doi.org/10.1351/goldbook.16072
Supernatant fraction obtained from an organ (usually liver) homogenate by centrifuging at \(\pu{9000 g}\) for \(\pu{20 min}\) in a suitable medium; this fraction contains cytosol and microsomes.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1305 [Terms] [Paper]