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Q What is the fundamental structure of the HIV virus? What is the function of the glycoproteins of its envelope?
HIV is an RNA virus in its core there are two strands of RNA and reverse transcriptase molecules. The core is covered by a capsid a layer of proteins. The capsid then is covered by an envelope having lipids and glycoproteins.
The glycoproteins of the HIV envelope are located on the outer surface of the virus and they are responsible for the recognition of the cells to be infected the HIV host cell is the CD4 lymphocyte and for the adhesion of the virus to the cell membrane. CD4 is a receptor glycoprotein of the external membrane of some lymphocytes.
Release of lysosomal enzymes from white blood cells during a local immune attack can contribute to the symptoms of inflammation. Suppose, to alleviate inflammation, you develop a d
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General characters of phylum protozoa
Doppler echocardiojgraphy measures blood flow velocities and direction of blood flow in the heart add great vessels. The characteristics of blood flow are evaluated using both a
Adaptive radiation: The growth of a variety of species from the single ancestral form; occurs when a new habitat becomes accessible to a population. The evolutionary pattern of di
An egg osmometer Place some dilute hydrochloric acid or strong vinegar in a shallow dish, likeas a saucer, to a depth of about one centimetre. Hold the large end an egg in the
Eczema and Dermatitis: Eczema and Dermatitis are a common problem all over the world. Their incidence is 2-3 per cent of all medical problems seen in practice (about 30 per
What are the Micronutrients All the micronutrients except molybdenum, boron and chlorine are available more in acid soils. These elements may limit plant growth either becaus
What are some industrial processes that use bacteria? Bacteria are used by industry in many ways. There are vaccines made of attenuated pathogenic bacteria or of antigens prese
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