Table 2. Quantification of endogenous DDA in mammalian tissues and fluids.

	DDA
Tissue/fluids	ng per g tissuea	nMa	ng per mg proteina
Brain (M)	46±7	87±14	1.06±0.17
Liver (M)	263±49	485±92	3.16±49
Lung (M)	36±7	65±13	0.54±0.11
Spleen (M)	112±1.7	207±31	1.51±0.22
Spleen (H)	66±9	126±16	0.76±0.10
Fœtal serum (B)	3.1±0.6	6.2±1.3	0.07±0.01
Charcoal-treated serum	N.M.	N.M.	N.M.
Plasma (H)	1.4±0.5	2.8±1.0	0.05±0.04

B, bovin; DDA, dendrogenin A; H, human; M, mouse; N.M., not measurable.

^aMean±s.e.m. values (see Methods).