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.
HIV/AIDS overview. Key points. In general, complications of HIV donât occur if your CD4 count is higher than 500 cells per cubic millimeter. Most life-threatening complications occur when your CD4 count drops below 200 cells per cubic millimeter. Regardless of your CD4 count, HIV is considered AIDS if you experience any of these complications.