Table 2. Tissue distribution of 15a following a single intravenous administration (2 mg kg^–1) ^a .

Tissue	Concentration of 15a
	0.25 h	2 h	12 h
Heart plasma (ng mL–1)	144	31.2	1.90
Portal vein plasma (ng mL–1)	142	33.1	2.04
Heart (ng g–1)	992	223	19.8
Liver (ng g–1)	2557	518	57.3
Lung (ng g–1)	3320	847	633
Kidney (ng g–1)	806	187	33.0
Brain (ng g–1)	224	93.9	3.11

^aSix rats were assigned to each group.