<100 fg C/µm^3
||Braun S et al., Size and Carbon Content of Sub-seafloor Microbial Cells at Landsort Deep, Baltic Sea. Front Microbiol. 2016 Aug 31 7: 1375. doi: 10.3389/fmicb.2016.01375 p.10 left column top paragraphPubMed ID27630628
||Fagerbakke, K. M., Heldal, M., and Norland, S. (1996). Content of carbon, nitrogen, oxygen, sulfur and phosphorus in native aquatic and cultured bacteria. Aquat. Microb. Ecol. 10, 15–27. doi: 10.3354/ame010015
||Primary source abstract: "The content of carbon, nitrogen, oxygen, phosphorus and sulfur was measured in individual
cells from 6 native aquatic samples and 4 samples of cultured bacteria by X-ray
microanalysis using a transmission electron microscope (TEM)."
||P.10 left column top paragraph: "For comparison, the carbon density in growing E. coli cells, and in several other growing cultures, is typically < 100 fg C/μm^3 (primary source)." fg C=10^-15 grams Carbon