Cadmium ChlorideU937 CellsMonocytesTetradecanoylphorbol AcetateCell LineTumor Cells, CulturedCell DifferentiationEnzyme ActivationHIV-1HIV Long Terminal RepeatHIVVirus ReplicationTranscription Factor AP-1Tumor Necrosis Factor-alphaGene Expression Regulation, ViralLeukemia, Monocytic, AcuteLipopolysaccharidesRNA, MessengerTranscription, GeneticMacrophagesApoptosisMolecular Sequence DataProto-Oncogene Proteins c-mybLeukemia, Experimental