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 one of only two terrestrial species of turtles native to the Great Plains of the United States. It is one of the two different subspecies of Terrapene ornata. It is the state reptile of Kansas. It is a relatively small turtle, that is currently listed as threatened in Illinois but is of concern and protected in six Midwestern states. Males and females generally look alike but males are often smaller; there is color variation with yellow lines from the center of the shell