Cytokine production was determined using 96-well cell culture supernatants and commercial ELISA kits for TNF-a (R&D Systems) and IL-6 (Sanquin) following the instructions of the manufacturer. One hour before LPS treatment on day 6 of Mo differentiation43 (link), the medium was refreshed and 1 nM to 1 μM TA and optionally 1 μM RU486 of the GR antagonist (Sigma, M8046) were added to the medium. LPS (100 ng ml−1) treatment lasted 24 h at which point the supernatant was collected for ELISA.
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