Table 1.

Quantitative data from intra-axonal injection experiments

	Number of cutaneous-type afferents	Number of HFA-like axons (% of cutaneous-type)	Number of HFA-like axons entering ventral half of lamina IIa	Mean number of boutons per afferent in ventral lamina II (range)	Mean % of boutons per afferent that contacted PKC γ profiles in lamina II (range)
Normal afferents	58	27 (46.6)	9	299 (14-812)	4.7 (0-7.9)
Axotomized afferents	38	15 (39.5)	5	254 (8-670)	5.4 (0-12.2)

HFA, Hair follicle afferent.

^a Only axons with HFA-like morphology had collaterals that arborized in ventral lamina II, and none of these entered the outer part of lamina II or lamina I