marine heterotrophic bacteria ~69/16/1 Prochlorococcus 46/10/1 Synechococcus 301/49/1 carbon/nitrogen/phosphorus
||Jover LF, Effler TC, Buchan A, Wilhelm SW, Weitz JS. The elemental composition of virus particles: implications for marine biogeochemical cycles. Nat Rev Microbiol. 2014 Jul12(7):519-28. doi: 10.1038/nrmicro3289. p.520 left columnPubMed ID24931044
|| Suttle, C. A. Marine viruses — major players in the global ecosystem. Nature Rev. Microbiol. 5, 801–812 (2007).  Bertilsson, S. et al. Elemental composition of marine Prochlorococcus and Synechococcus: implications for the ecological stoichiometry of the sea. Limnol. Oceanogr. 48, 1721–1731 (2003). link PubMed ID17853907
||Primary source  abstract:"[Investigators] analyzed the cellular carbon (C), nitrogen (N), and phosphorus (P) contents of Prochlorococcus (MED4) and
Synechococcus (WH8103 and WH8012) under nutrient-replete and P-starved conditions."
||P.519 right column bottom paragraph: "The baseline for studies of the elemental stoichiometry of marine microorganisms was established more
than 60 years ago by Alfred Redfield, who estimated that marine plankton (and organic marine detritus) have a carbon/nitrogen/phosphorus (C/N/P) ratio of 106/16/1 (BNID 112423). The Redfield ratio remains the foundation for studies of the elemental composition of marine microorganisms and organic matter, particularly in the deep oceans [refs 4,15]. Indeed, the observed elemental ratios can vary
greatly with the component of marine organic biomass that is under consideration: for example, estimates of
C/N/P for marine heterotrophic bacteria are reported to be around 69/16/1 (primary source 5), and measurements for
individual cyanobacterial isolates include 46/10/1 (for Prochlorococcus sp. MED4 under phosphorus‑replete
conditions) and 301/49/1 (for Synechococcus sp. WH8013 under phosphorus‑limited conditions) (primary source 12). Thus, the elemental stoichiometry of bacterial cells varies with taxa and growth conditions and often differs substantially from the Redfield ratio (reviewed in ref. 16)."