The inner ear (internal ear, auris interna) is the innermost part of the vertebrate ear. In vertebrates, the inner ear is mainly responsible for sound detection and balance. In mammals, it consists of the bony labyrinth, a hollow cavity in the temporal bone of the skull with a system of passages comprising two main functional parts:
In a laboratory setting, HIV has been kept alive for as long as 15 days after the body fluid has dried, but this was controlled at a stable temperature and humidity that would be nearly impossible to reproduce in the natural world.
Hepatitis C Virus Can Survive in Syringes Up to 2 Months under Favorable Conditions. By Liz Highleyman. HIV and HCV are transmitted in some of the same ways, but HCV transmission typically occurs first in people exposed to both viruses, such as injection drug users who share needles and syringes.