Helminth: Any member of a group of parasitic worms, which include tapeworms (cestodes), flukes (trematodes), and roundworms (nematodes). https://t.co/NWolHKv5yx Explore more terms from the NEJM Illustrated Glossary: https://t.co/6Ixo6ozXRx https://t.co/jEbvtMjcOA

Herpes simplex virus type 1 (HSV-1): A DNA-containing virus that in its native form causes cold sores on the lips or face and, rarely, brain infections. https://t.co/RTxu0SJGw8 Explore more terms from the NEJM Illustrated Glossary: https://t.co/6Ixo6ozXRx https://t.co/iviYPY0WzZ

Epidermal growth factor receptor (EGFR): A cell-surface glycoprotein that is activated through binding ligands, such as the epidermal growth factor (EGF). https://t.co/0ViVKHmLgV Explore more terms from the NEJM Illustrated Glossary: https://t.co/6Ixo6ozXRx https://t.co/0bFY5TJ94x

Genome: All the genetic instructions found in a cell. https://t.co/Lv7Dr14B6s Explore more terms from the NEJM Illustrated Glossary: https://t.co/6Ixo6ozXRx https://t.co/D3tKy2pQSk

Protein prenylation: The addition of farnesyl or geranygeranyl moieties (both of which are hydrophobic) to proteins, which facilitates their attachment to membranes. https://t.co/t7f0l5U9hW Explore more terms from the NEJM Illustrated Glossary: https://t.co/6Ixo6ozXRx https://t.co/PBH8cX3Mhy

Prodrug: A therapeutic agent that is delivered in an inactive form and is metabolized to its active form in vivo. https://t.co/Wyi3CUHxlH Explore more terms from the NEJM Illustrated Glossary: https://t.co/6Ixo6ozXRx https://t.co/iljvNp2J3I

Chimeric antigen receptor T cells (CAR T cells): Engineered T cells that target a specific cell-surface antigen, such as one expressed by a tumor cell. https://t.co/YI37U2Ip4b Explore more terms from the NEJM Illustrated Glossary: https://t.co/6Ixo6ozXRx https://t.co/rzmDlc9Bo9

Helicobacter pylori: A spiral-shaped, flagellated, gram–negative bacterium that exclusively colonizes the human stomach. https://t.co/vWefP03Egj Explore more terms from the NEJM Illustrated Glossary: https://t.co/6Ixo6ozXRx https://t.co/w7FBxIjIws