Table 1.

dlk has no affect in clonogenic progenitor assay

Additive	Conc., μg/ml	CFU*
		Total	G/GM/M	Mix	HPP-Mix
None	—	95.4 (7.93)	50.1 (8.52)	30.5 (2.68)	13.2 (2.58)
dlk	0.1	95.9 (6.86)	59.2 (9.31)	23.9 (3.08)	12.8 (1.82)
	0.5	82, 113	43, 73	26, 22	13, 18
	1.0	99, 110	50, 70	31, 22	18, 18
Control	0.1	95.5 (6.53)	59.1 (9.31)	24.5 (3.82)	11.8 (1.42)
	0.5	78, 121	43, 82	17, 24	18, 14
	1.0	77, 104	41, 67	24, 21	11, 16

Four fetal liver purifications provided the stem cells for the studies with no additive, and 0.1 μg/ml and the data are expressed as the mean of these experiments, with SEM in parentheses. Data from two separate experiments with additive at 0.5 and 1.0 μg/ml are shown. 

^*CFU are expressed per 1,000 AA4.1⁺, lin^−/lo, Sca-1⁺ and c-kit⁺ fetal liver cells. G, granulocyte; M, macrophage; GM, granulocyte/macrophage; Mix, contain 2 or more myeloid lineage cells and erythroid bursts, HPP ≥ 1 mm in 8 days.