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Dulbecco s modified eagle s minimal essential medium dmem

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Dulbecco's Modified Eagle's minimal essential medium (DMEM) is a cell culture medium formulation that provides a balanced salt solution and nutrients to support the growth and maintenance of various cell types in vitro. It is a widely used medium in the field of cell biology and biopharmaceutical research.

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2 protocols using dulbecco s modified eagle s minimal essential medium dmem

1

Growth of Faecalibacterium prausnitzii Strains

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The reference strains A2-165 (DSM 17677; Duncan et al., 2002 (link)), L2/6 (Barcenilla et al., 2000 (link)) and M21/2 (Louis et al., 2004 (link)) and the F. prausnitzii isolated strains (Table 1) were grown at 37°C in YBHI medium supplemented with cellobiose (1 mg/ml; Sigma), maltose (1 mg/ml; Sigma), and cysteine (0.5 mg/ml; Sigma) in an anaerobic chamber filled with N2 = 90%, CO2 = 5% and H2 = 5%.
HT-29 (ATCC HTB-38) (LGC-Standars) cell line was grown in Dulbecco's Modified Eagle's minimal essential medium (DMEM) (Sigma-Aldrich) supplemented with 10% (w/v) heat-inactivated fetal bovine serum (FBS) (GibcoBRL, Eragny, France) and with penicillin G/ streptomycin (5,000 IU/mL, 5,000 μg/mL) (Sigma-Aldrich). Cultures were incubated in 25 cm2 tissue culture flasks (Nunc, Roskilde, Denmark) at 37°C in a 5% (v/v) CO2 atmosphere until confluence.
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2

Photosensitizer Synthesis and Preparation

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The photosensitizers used in this study were RF (Sigma-Aldrich, St. Louis, USA) and RFTA, which was obtained as previously described [19] with modification of the synthetic procedure [31] . Briefly, 0.5 g of RF was mixed with 100 mL of (CH 3 CO) 2 O:C 2 H 4 O 2 (1:1), and then 1 mL of HClO 4 was added and the mixture was refluxed for 3 h at 40 °C. The reaction was cooled to 0 °C, after 200 mL of cold deionizer water was added and extracted three times with 25 mL CHCl 3 . The organic phase was washed with 25 mL of cold water followed by 25 mL of a cold saturated NaCl solution. The solvent was evaporated at 50 °C and the product recrystallized four times in CH 3 OH:H 2 O (17:3). Finally, RFTA was diluted in 1% (v/v) acetone-high glucose Dulbecco's modified Eagle's minimal essential medium (DMEM; Sigma-Aldrich, St. Louis, USA).
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