Underhill is a surname. Notable people with the surname include:

Testing spoken language
Role of fault interactions in controlling synrift sediment dispersal patterns: Miocene, Abu Alaqa Group, Suez Rift, Sinai, Egypt
Different immunogenetic background in autoimmune hepatitis type 1, type 2 and autoimmune sclerosing cholangitis
Collaborative induction of inflammatory responses by dectin-1 and Toll-like receptor 2.
Mechanisms of phagocytosis in macrophages.
The Toll-like receptor 2 is recruited to macrophage phagosomes and discriminates between pathogens.
Tumors: Wounds That Do Not Heal
The Cellular Basis of Hepatic Fibrosis -- Mechanisms and Treatment Strategies
PHAGOCYTOSIS OF MICROBES: Complexity in Action
Toll-like receptor-2 mediates mycobacteria-induced proinflammatory signaling in macrophages