baculovirus lost titer

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baculovirus lost titer

Postby volodya_tx » Oct 06 2017 4:11 pm

Dear Colleagues,

My baculoviral P3 stock stopped working for protein expression (storage time ~5 months at 4 C).
I tried to re-amplify from P2->P3 virus and P3->P4 viruses (also stored for 5 months at 4 C), my cells got infected and then I harvested supernatant 120 h post-infection (cell viability was ~30%), but when these viruses were used for expression they did not work again.
I feel I should start all over again from bacmid transfection?
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