Table 1.

ECs enhance pericyte neurosphere formation

	Spheres / culture*	Differentiation (days in culture)
Wild type pericytes	26 ± 6	10 – 14
IMPs	29 ± 4	10 – 12
Wild type pericytes + ECs**	34 ± 5***	5
IMPs ± ECs	36 ± 7***	3 – 5
IMPs ± ECCM§	24 ± 5	15

^*Mean ± SD; n = 3 experiments with 3 wells per determination.

^**ECs added back at a ratio of 1:4.

^***Significantly different from wild type pericyte and IMP cultures (P < 0.01).

^§Conditioned medium from three-day old primary EC cultures plated at 10⁶ cells/ml.