Expected Yields of Total RNA from mammalian cells following purification with Trizol Reagent || '''Tissue''' || '''Yield / mg''' || || Liver or Spleen || 6-10 ug || || Kidney ||3-4 ug || || Skeletal muscle or Brain || 1-1.5 ug || || placenta || 1-4 ug || From Cells, the following yields are expected: || '''Cell Type''' || '''Yield / 10e6 cells''' || || epithelial || 8-15 ug || || fibroblast || 5-7 ug || || flow sorted || 4-20 ug || Numbers I've come across from various sources.