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. Author manuscript; available in PMC: 2014 Jul 9.
Published in final edited form as: Methods Enzymol. 2013;529:209–226. doi: 10.1016/B978-0-12-418687-3.00017-3
Component Final Concentration Stock Amount
Methotrexate 30 mM 0.136 g
Alpha MEM 9.5 ml
NaOH 50 mM 1 M 0.5 ml

Mix well until MTX is dissolved and pass through a 0.2 μm filter to sterilize. Store in sterile aliquots at −20 C