In adolescents and adults, it causes an illness known as infectious mononucleosis between 35 and 50 percent of the time. The virus is spread through saliva or upper respiratory secretions and cannot be spread through contact with the blood. The Epstein-Barr virus test is a blood test used to identify an EBV infection.The test detects the presence of antibodies, which are proteins that your bodyâs immune system releases in response to a harmful substance, called an antigen. Specifically, the EBV test is used to detect antibodies to EBV antigens.n adolescents and adults, it causes an illness known as infectious mononucleosis between 35 and 50 percent of the time. The virus is spread through saliva or upper respiratory secretions and cannot be spread through contact with the blood. The Epstein-Barr virus test is a blood test used to identify an EBV infection.
The Nissan Leaf (also formatted LEAF as a backronym for leading environmentally-friendly affordable family car) is a compact five-door hatchback electric car manufactured by Nissan and introduced in Japan and the United States in December 2010.
A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem. The leaves and stem together form the shoot. Foliage is a mass noun that refers to leaves collectively. Typically a leaf is a thin, dorsiventrally flattened organ, borne above ground and specialized for photosynthesis.Most leaves have distinctive upper (adaxial) and lower (abaxial) surfaces that differ in colour, hairiness, the number of stomata (pores that intake and output gases) and other features.xternal leaf characteristics, such as shape, margin, hairs, the petiole, and the presence of stipules, are important for identifying plant species, and botanists have developed a rich terminology for describing leaf characteristics. Leaves have determinate growth.