The intrinsic layer of the PIN diode is a layer without doping, and as a result this increases the size of the depletion region - the region between the P and N layers where there are no majority carriers. This change in the structure gives the PIN diode its unique properties.
Be aware of possible complications. By weakening your immune system, HIV can leave you vulnerable to certain cancers and infections. These infections are called opportunistic because they take the opportunity to attack you when your immune system is weak.
Question: How long does it take for HIV to progress to AIDS? Answer: In all but a few rare cases, if left untreated, HIV will progress to a stage of infection we call AIDS. This is when the immune defenses have been compromised, and the body is less able to defend itself against potentially life-threatening infections.