PMC:3463543 / 16369-17072 JSONTXT

{"project":"2_test","denotations":[{"id":"23056454-11777428-92972556","span":{"begin":699,"end":701},"obj":"11777428"}],"text":"We observed the droplets of each medium under a microscope immediately after incubation at different RHs and found that no crystals formed at RH\u003e60%, while droplets of all media crystallized at an RH just below 50% (Figure 3). Crystallization occurred within ∼10 min. Crystallization in DMEM, possibly at a lower NaCl concentration (corresponding to higher RH) than in PBS, due to a different ERH of the media, could explain the lower decay rate in DMEM at a concentration of 510 g L−1 (50% RH). Knowing the ERH of each media would lend further support to this idea, but the ERH of a solution is difficult to calculate and can only be measured accurately through specialized laboratory experiments [27]."}