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.
The reason why nitrogen gas is inert at room temperature is because the triple bond between the two nitrogen atoms in each nitrogen molecule (N2) is very strong, and therefore â¦ it takes a lot of energy to break that bond, and until that bond is broken, the nitrogen cannot react with any other chemical.nly the noble gases (8A) are truly inert, though they are rare. Nitrogen is a diatomic in natural state, meaning that two nitrogen atoms are stuck together.