For ex vivo pituitary culture, anterior pituitaries were isolated from Hesx1Cre/+;Ctnnb1lox(ex3)/+ embryos at 18.5 dpc, placed on top of 0.2 µM Whatman filters (SLS) in 24 well plates containing 500 µl of media (DMEM-F12 (Gibco), 1% Pen/Strep (Sigma) and 1% FBS (PAA) supplemented with either ABT-737 at 2.5 µM (Adooq Bioscience), ABT-263 at 1 µM (Caymen Chemical) or vehicle. Anterior pituitaries were cultured for 3–4 days, changing media every day and subsequently processed for histological analysis.
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