The Test. Tests for Epstein-Barr virus (EBV) antibodies are used to help diagnose infectious mononucleosis (mono) if a person is symptomatic but has a negative mono test.he Test. Tests for Epstein-Barr virus (EBV) antibodies are used to help diagnose infectious mononucleosis (mono) if a person is symptomatic but has a negative mono test.
leaf scar. (botany). A mark on a stem, formed by secretion of suberin and a gumlike substance, showing where a leaf has abscised. 1  Facebook. 2  Twitter.
lyrate leaf-a simple leaf having curvature suggestive of a lyre. obtuse leaf-a simple leaf having a rounded or blunt tip. oblanceolate leaf-a leaf having a rounded apex and tapering base. oblong leaf-a simple leaf that is rounded at each end with parallel sides.obovate leaf-an egg-shaped leaf with the narrower end at the base.ovate leaf-an egg-shaped leaf with the broader end at the base.blong leaf-a simple leaf that is rounded at each end with parallel sides. obovate leaf-an egg-shaped leaf with the narrower end at the base. ovate leaf-an egg-shaped leaf with the broader end at the base.