Table 2.

The incidence of ATP or αβ-me-ATP-elicited responses during postnatal development

	ATP sensitive			αβb-me-ATP sensitive
	P10–12	P16–18	P28–30	P10–12	P16–18	P28–30
Presynaptic	58 (65.2)	78 (64.5)	61 (61.7)	0 (0)	12 (19.3)	92 (46.9)
Postsynaptic	6 (6.7)	8 (6.6)	14 (14.1)	0 (0)	7 (11.3)	24 (12.2)
Pre- and postsynaptic	5 (5.6)	10 (8.3)	14 (14.1)	0 (0)	6 (9.7)	28 (14.3)
No effect	20 (22.5)	25 (20.6)	10 (10.1)	42 (100)	37 (59.7)	52 (26.5)
Total number of responses	89 (100)	121 (100)	99 (100)	42 (100)	62 (100)	196 (100)

Values in parentheses are a percentage of the total number of responses.