Table 1.

Induction rate of ectopic spike and bump formation

Experiments	Bump formation	Spike formation	No response	Total number
ALM1 (1 major nerve)	0	0	25	25
ALM1 (3 major nerves)	162	0	17	33
ALM1 + humerus damage	14	10	3	17
ALM − skin grafting	8	0	8	16

¹Nerve deviation + skin wounding + skin graft from the contralateral side of the limb.

²Some were extended but absence of cartilaginous cells was confirmed by Alcian blue staining.