The human immunodeficiency virus (HIV) is a lentivirus (a subgroup of retrovirus) that causes HIV infection and acquired immunodeficiency syndrome (AIDS).AIDS is a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive.Without treatment, average survival time after infection with HIV is estimated to be 9 to 11 years, depending on the HIV subtype.IDS is a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. Without treatment, average survival time after infection with HIV is estimated to be 9 to 11 years, depending on the HIV subtype.
Black Tortoise. The Black Tortoise or Black Turtle is one of the Four Symbols of the Chinese constellations. Despite its English name, it is usually depicted as a turtle entwined together with a snake. Further, in East Asia, it is not called after either animal but is instead known as the Black Warrior under various local pronunciations.
The ornate box turtle is a terrestrial turtle in the family Emydidae that is equipped with a high-domed carapace and a hinged plastron. This hinge allows them to close their shells completely when provoked by predators. The carapace is brown with yellow stripes radiating from the center of the each scute.he ornate box turtle is found throughout the central and western United States. In Arizona this species is represented by a subspecies called the desert box turtle (Terrapene ornata luteola).