Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody DONOR: Human immunodeficiency virus (HIV) seronegative Seronegative for human immunodeficiency virus (HIV) antibody; Note: the experimental treatment being evaluated in this protocol depends on an intact immune system Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody SCREENING: Seronegative for human immunodeficiency virus (HIV) antibody TREATMENT: Seronegative for HIV antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody Seronegative for human immunodeficiency virus (HIV) antibody