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.
Silver leaf is a fungal disease caused by Chondrostereum purpureum. It infects through wounds, mainly caused by pruning. Leaf silvering occurs during summer and fruiting bodies form from late summer.imilar silvering symptoms may sometimes develop as a result of cold, drought or other non-disease forms of stress. This is known as false silver leaf and can be told apart from true silver leaf by the absence of stain in the wood.