To determine the safety, tolerability and maximum tolerated dose of SDZ ILE 964 administered by daily subcutaneous injections in patients infected with human immunodeficiency virus (HIV) who have cytopenias (low blood cell counts). To obtain information about the biologic effects of SDZ ILE 964 administration in improving blood counts in HIV-infected patients. To obtain information about the effects of SDZ ILE-964 administration on both parameters of HIV replication and on residual immunologic function.