Wasting, or loss of lean tissue, is a serious consequence of AIDS. Body composition findings in HIV-infected children are similar to those of HIV-uninfected children with classic growth hormone deficiency. Evidence suggests that therapeutic administration of growth hormone (GH) can induce anabolic effects, reverse pathologic catabolism, and perhaps even improve immune function. As survival to adolescence and beyond improves with modern therapy in children with HIV infection, it will become increasingly important to address the problems of stunting and short stature in this population. [AS PER AMENDMENT 09/04/01: Recent evidence suggests that needle-free delivery is preferred by young children below the age of ten years. Given the advantages of a needle-free delivery system for the administration of growth hormone, most significantly the reduction of risk for HIV contaminated needle-stick injuries to care providers and other household members, it has been decided to use this method of study drug delivery for all study participants.]