arthrospore: a body that resembles a spore but is not an endospore; produced by some bacteria
cell: (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
non-nucleoside reverse transcriptase inhibitor: an antiviral drug used against HIV; binds directly to reverse transcriptase and prevents RNA conversion to DNA; often used in combination with other drugs