Photosynthesis Tool Kit - quantitation Reference: AS04 051set Estimation of PSI to PSII ratio can be done using quantitative western blot technique using anti-PsaC (PSI) and PsbA (PSII) antibodies. References: Brown et al. (2007). Resource dynamics during infection of Micromonas pusilla by virus MpV-SP1. Environmental Microbiology 9(11): 2720-2727. Brown et al. (2008). Flux capacities and acclimation costs in Trichodesmium from the Gulf of Mexico. Marine Biology 154 (3): 413-422.