Table 3.

Axonal projection patterns of pre-BötC inspiratory neurons labeled by midline injection of Ca²⁺-sensitive dyes or GAD67-GFP positive pre-BötC inspiratory neurons

Neuron type (n = 46)	Projection
Neuron type (n = 46)	Contralateral pre-BötC	Ipsilateral preMN	Contralateral preMN	Ipsilateral XII motor
Intrinsic burster (n = 8)	8^{^a} (100%)	8 (100%)	2 (25%)	1 (13%)
Nonburster (n = 14)	14^{^b} (100%)	12 (86%)	4 (29%)	4 (29%)
Nonburster (GAD67-GFP) (n = 24)	0 (0%)	13 (54%)	0 (0%)	8 (33%)

↵^a 2 dorsal, 6 ventral trajectories.
↵^b 5 dorsal, 9 ventral trajectories (see Results).