Table 2.

Effects of cytokines on the colony-forming activity of MKPs

Cytokines added	Number of day-10 colonies per 100 MKPs
	CFU-MK	BFU-MK/E	BFU-E	CFU-GM
SCF + IL-11	0	0	0	0
	1	0	0	0
SCF + IL-11 + Tpo	28	0	0	0
	31	0	0	0
SCF + IL-11 + Epo	3	0	1	0
	2	0	0	0
SCF + IL-11 + IL-3 + GM-CSF	5	0	0	0
	6	0	0	1
	4	0	0	0
	8	0	0	0
SCF + IL-11 + Tpo + Epo	29	0	0	0
	34	0	0	0
	42	0	1	0
	37	0	0	0
SCF + IL-11 + IL-3 + GM-CSF + Tpo + Epo	61	0	1	1
	46	2	0	0
	55	1	0	0
	42	3	0	0

BFU-E, burst-forming unit–erythrocytes.