Calcium nitrate dihydrate (Ca(NO3)2.2H2O), diammonium phosphate ((NH4)2HPO4), boric acid (H3BO3),
ammonia (NH4OH), acetic acid (glacial), l-ascorbic
acid, β-glycerophosphate,
and dexamethasone were purchased from Sigma, USA. DMEM:F12, fetal
bovine serum, penicillin–streptomycin cocktail, RPMI 1640,
EndoGo XF, and EndoGoXF supplements were purchased from Biological
Industries, Israel. PMA and Normocin were obtained from Invivogen,
USA. Other chemicals and solutions used in the study are reagent-grade.
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