HL-60 cells infected with human immunodeficiency virus type 1 (HIV 1)
can be induced to differentiate along the granulocyte pathway by retin
oic acid. In these cells, HIV mRNA synthesis is stimulated, but synthe
sis of viral proteins and virus replication are blocked and HIV-infect
ed cells die after becoming apoptotic and/or vacuolized. (C) 1994 by T
he American Society of Hematology.