Answer:
The earliest known case of infection with HIV-1 in a human was detected in a blood sample collected in 1959 from a man in Kinshasa, Democratic Republic of the Congo. (How he became infected is not known.)
Explanation:
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When new information or experiences cause you to modify your existing schemes.
During exercise, stored chemical energy is converted to energy that can be used for muscle movement.
It's a pretty common symbol, mostly in the U.S. How ever it is two snakes with a set of wings, this stands for medicine instead of the correct rod of asclepius. I hope in some way this helps.
