We use optical density (OD) at a wavelength of 600nm as a quick approximation of cell abundance in liquid bacterial culture in lieu of counting the cells on a microscope. Different bacterial strains can have different relationships between OD and cell abundance depending on the amounts of polysaccharides or other secondary metabolites they might extrude […]
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...' --Isaac Asimov
r eric collins (@REC3141)
daily arctic sea ice extent
