Prenatal and Postnatal Polycyclic Aromatic Hydrocarbon Exposure, Airway Hyperreactivity, and Beta-2 Adrenergic Receptor Function in Sensitized Mouse Offspring

Table 2

Pyrene concentrations (ng/m³) in exposure chamber.

Exposure	𝑁	Mean + SE	Range
Normal air	11	3.03 ± 0.90	0–9.00
PAH	11	23.24 ± 3.05	7.38–40.00

𝑁 represents the number of extractions of 3 filters, each one collecting pyrene levels over a 5-day period of aerosolization. The single level obtained from 3 consecutive filters was designed to capture the average level over a single exposure period. 11 filters were chosen from 13 rounds of mice representing both exposure groups evenly. Measured pyrene concentration in the PAH exposure group averaged higher than that in normal air exposure group (𝑃<0.005, two-tailed 𝑡-test).