Merck & Co., Inc. is a health care company, which engages in the provision of health solutions through its prescription medicines, vaccines, biologic therapies, animal health, and consumer care products. The company is headquartered in Rahway, New Jersey and currently employs 72,000 full-time employees. The company offers health solutions through its prescription medicines, including biologic therapies, vaccines and animal health products. The Company’s Pharmaceutical segment includes human health pharmaceuticals and vaccine products. Human health pharmaceutical products consist of therapeutic and preventive agents, generally sold by prescription, for the treatment of human disorders. The company sells these human health pharmaceutical products to drug wholesalers and retailers, hospitals, government agencies and managed health care providers. Its Animal Health segment discovers, develops, manufactures and markets a range of veterinary pharmaceutical and vaccine products, and health management solutions and services, for the prevention, treatment and control of disease in all livestock and companion animal species. The Company’s lead candidate, MK-6070, is a T-cell engager targeting delta-like ligand 3 (DLL3), an inhibitory canonical Notch ligand.