Activation and inactivation data

Zeberg et al. "A Neandertal sodium channel increases pain sensitivity 
in present-day humans"

AMH=Anatomically modern human (i.e. "WT")
XENOPUS=data from xenopus oocytes
HEK=Human ebryonic kidney cells
M932L/V991L/D1908G=amino acid replacements

Clamp is the custom written software used for voltage clamp.