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 pinnate leaf is a compound leaf that attaches to the stem and is divided into smaller leaflets. A pinnate leaf can either be even or odd, which is the amount of leaflets contained on the leaf. As you can see, both the drawing and picture are odd pinnate leaves because they have an odd amount of leaflets.