Local Weather. Brewing tropical cyclone in Bay of Bengal won't bring heat relief to India. April 13, 2017, 9:40:41 AM EDT. A budding tropical cyclone in the Bay of Bengal is expected to target Myanmar, preventing India from welcoming any relief from the dangerous heat wave. Tropical depression to soak central Philippines Easter weekend. April 14, 2017, 7:00:42 AM EDT.
HIV is a retrovirus. HIV is an enveloped retrovirus. Each virus particle contains two copies of an RNA genome. The virus also has a number of enzymes: reverse transcriptase, integrase and viral protease. These molecules play an important role in making new copies of HIV and can be the targets of antiretroviral drugs.
HIV is an enveloped RNA virus: As HIV buds out of the host cell during replication, it acquires a phospholipid envelope. Protruding from the envelope are peg-like structures that the viral RNA encodes. Each peg consists of three or four gp41 glycoproteins (the stem), capped with three or four gp120 glycoproteins.