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Contents
Tuesday 21st June
Lab work
Competent cells preparation
by Lea, Caroline and Marion
Culture OD was measured at 600nm (OD = 3.4). 3.4mL were put into 250mL of LB medium and incubated at 20°C and 180rpm overnight.
Interlab study
Transformation
by Lea, Caroline and Marion
50µL of competent DH5α cells were transformed with 1µL of plasmids (for each construction: device 1, 2, 3, negative control and positive control) and one control tube was made without plasmids. Tubes were kept into ice for 30min then a thermal shock was made at 42°C for 1min. 500µL LB medium was added into each tube and incubated at 37°C for one 1h. Petri dish were prepared with selective medium containing LB, agar and 30µg/mL chloramphenicol. Each transformation condition was displayed into petri dish in duplicate and then incubated at 37°C overnight.