The p24 antigen test can detect the p24 protein on average 10 to 14 days after infection with HIV.2,3,11,12 One drawback of this test is that levels of the p24 protein peak at around three to four weeks after exposure to HIV and are usually not detectable after five to six weeks (and sometimes even earlier).
Liquid nitrogen is nitrogen in a liquid state at an extremely low temperature.It is produced industrially by fractional distillation of liquid air. Liquid nitrogen is a colorless clear liquid with density of 0.807 g/ml at its boiling point and a dielectric constant of 1.43.iquid nitrogen is nitrogen in a liquid state at an extremely low temperature.
There are 3 basic states of matter. These are solid, liquid and gas. The melting point is the temperature at which matter changes completely from solid to liquid, thereby melt â¦ ing. The boiling point is the point at which matter changes completely from liquid to gas, thereby evaporating.itrogen melts at 63.15 K or -210.00 Â°C or -346.00 Â°F. Nitrogen boils at 77.36 K or -195.79 Â°C or -320.3342 Â°F.   Everything more you need can be found by using the l â¦ ink below. It will take you to the Wikipedia post on nitrogen, and knowledge is provided there for free.