Seedling Growth-2: The third of three six-day-growth sessions was completed today. Wilmore removed Experiment Containers (ECs) from the European Modular Cultivation System (EMCS), processed the samples and stowed them in the Minus Eighty degree Laboratory Freezer for ISS (MELFI) for return on a later flight. In a troubleshooting effort, the crew installed the single EC which did not hydrate during the first Seedling Growth session. Seedling Growth-2 is the second part of the Seedling Growth Experiment series and uses the plant Arabidopsis thaliana to determine the effects of gravity on cellular signaling mechanisms of phototropism and to investigate cell growth and proliferation responses to light stimulation in microgravity conditions. Seedling Growth 2 requires three EMCS runs to be performed to collect image data and frozen samples.