“…Human myeloma cell lines RPMI8226, EBV-transformed ARH-77 (27,28), MM1S, and KMS-5 (29,30); lymphoma cell lines Ramos, PEER, and Molt-4; and leukemia cell lines KG-1, HL-60, and U937 were cultured in RPMI 1640 containing 10% heat-inactivated FCS (Life Technologies), 2 mmol/L L-glutamine, 0.1% penicillin (100 units/mL), and streptomycin (100 mg/mL). hTERT gene -transduced human stromal cells (hTERT-stromal cells) were generated as previously described (31,32) and were cultured in longterm culture medium containing MEM-a, 12.5% horse serum (Life Technologies), 12.5% FCS, 1 Ă 10 Ă6 mol/L hydrocortisone (Sigma), 1 Ă 10 Ă4 mol/L h-mercaptoethanol (Sigma), 2 mmol/L L-glutamine, 0.1% penicillin (100 units/mL), and streptomycin (100 mg/mL).…”