scrub oak: any of various chiefly American small shrubby oaks often a dominant form on thin dry soils sometimes forming dense thickets
oak: a deciduous tree of the genus Quercus; has acorns and lobed leaves
mantoux test: tuberculin (a derivative of tubercle bacillus) is injected intradermally; a red area appearing 1-3 days later signifies an exposure (past or present) to tubercle bacilli and the need for further testing