Bristol-Myers Squibb is engaged in the discovery, development, licensing, manufacturing, marketing, distribution and sale of biopharmaceutical products. The company's products are sold worldwide, primarily to wholesalers, specialty distributors, retail pharmacies, hospitals, government entities and the medical profession. The company manufactures products in the United States and Puerto Rico and has manufacturing operations in two foreign countries. The company has products in the following therapeutic classes: hematology, oncology, cardiovascular and immunology. The company's pharmaceutical products include chemically-synthesized or small molecule drugs and products produced from biological processes, called biologics.