TABLE 1.

Chamber Conditions for Folr2^−/−, Folr2^+/+ & C57BL/6J Exposed Dams^a

Sidestream Cigarette Smoke Exposure
Condition	Sham Chamberb	CSEc Chamber bFolr	CSEc Chamber b C57BL/6J
Carbon Monoxide (ppm)	NDd	47.5 ± 0.3	44.1 ± 0.3
Humidity (% RH)	41.9 ± 0.7	48.5 ± 0.1	48.5 ± 0.1
Temperature (°C)	22.8 ± 0.1	22.2 ± 0.0	22.3 ± 0.0
Total Suspended Particulates (mg/m3)	0.2 ± 0.1	5.9 ± 0.1	5.6 ± 0.1

^aChamber measurements were monitored on a daily basis: immediately prior to, and then twice during the actual exposure period.

^bData for chamber conditions are reported as mean ± SEM.

^cCSE = Cigarette Smoke Exposure

^dND = Not Determined