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.
A compound leaf is one in which the leaf blade in broken up into a number of segments called leaflets. All borne on a single stalk called the rachis. Compound leaves can be seen in rose, neem and coriander. leaf having a single or undivided blade is called a simple leaf. The blade may be entire or lobed to any depth, but not down to the midrib or petiole. Simple leaves are found in mango, peepal, guava and many others.