Table 2

Concentrations (ng/μl or mg wet wt) in various tissues of exogenous AN, AA and polar metabolites (PM) over a 30-min time course.

Tissue	Time (min)	AN	AA	PM
Brain	1	1.97 ± 0.48	21.63 ± 3.84	1.37 ± 0.31
	5	1.4 ± 0.29	20.65 ± 2.21	1.39 ± 0.15
	15	0.16 ± 0.078^* ^†	14.59 ± 1.93	2.33 ± 0.36^* ^†
	30	0.15 ± 0.15^* ^†	20.55 ± 3.57	2.72 ± 0.32^* ^†
Plasma	1	70.56 ± 24.41	1.96 ± 0.91	40.34 ± 19.55
	5	7.92 ± 2.02^*	0.32 ± 0.12	4.62 ± 1.65
	15	5.97 ± 2.08^*	2.01 ± 0.91	8.97 ± 2.12
	30	2.32 ± 1.08^*	19.69 ± 4.54^* ^† ^‡	34.74 ± 9.4
Adrenal	1	138.92 ± 16.94	43.2 ± 20.29	55.43 ± 19.82
	5	30.17 ± 3.86^*	8.18 ± 3.01^*	14.3 ± 3.11^*

Values are x̄ ± S.E.M., n = 5 to 6. * P < .05 vs. 1 min,^† P < .05 vs. 5 min,^‡ P < .05 vs. 15 min. Recovered radioactivity was too low to separate and measure reliably in the 15- and 30-min groups in adrenal tissue.