Proteins, polypeptides, genes, and hormones for use in the treatment of cancer, adult onset diabetes, autoimmune diseases, namely, multiple sclerosis, rheumatoid arthritis, juvenile onset diabetes, transplant rejection, allergy, asthma, neurological diseases, namely, Parkinson's and Alzheimer's disease, genetic diseases, namely, amyotrophic lateral sclerosis, muscular dystrophy, and hemophilia, and infectious diseases, namely, bacterial and viral infections, namely, herpes simplex virus or acquired immunodeficiency syndrome, and parasitic diseases, namely, malaria; [ Transgenic animals namely, pigs, cows, goats, and sheep, and transgenic cells all for use in the treatment of cancer, adult onset diabetes, autoinmmune diseases namely, multiple sclerosis, rheumatoid arthritis, juvenile onset diabetes, transplant rejection, allergy, asthma, neurological diseases, namely, Parkinson's and Alzheimer's disease, genetic diseases namely, amyotrophic lateral sclerosis, muscular dystrophy, and hemophilia, and infectious diseases, namely, bacterial, and viral infectious, namely, herpes simplex virus or acquired imunodeficiency syndrome, and parasitic diseases, namely, malaria; ] kits comprised of cells for the delivery of biomolecules and drugs in vivo; kits comprised of chemical or biotechnological reagents for diagnosing medical conditions or states for in vitro use only