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.
Leaf mould 'crumbleâ of various grades. Leaf mould is whatâs left when the dead, fallen leaves from deciduous trees and shrubs are heaped up and allowed to rot down.As they slowly moulder, only the toughest bits remain, eventually forming spongy, dark brown crumbs to rival any dessert topping.eaf mould 'crumbleâ of various grades. Leaf mould is whatâs left when the dead, fallen leaves from deciduous trees and shrubs are heaped up and allowed to rot down.