Table 3.

AChR staining intensity

	Average gray value
GGF2 P11–P12 (three muscles)	117  ± 22.7  (59)
P12 contralateral control (three muscles)	118  ± 22.7  (56)
GGF2 P11–P13 (four muscles)
NTs that precisely overlie AChR plaque	141  ± 22  (56)
NTs with decreased synaptophysin density	144  ± 19  (46)
NTs that fail to cover entire AChR plaque	137  ± 21  (21)
P13 contralateral control (two muscles)	142  ± 21  (62)

The decreased gray value of the top two rows relative to the bottom four rows does not indicate an actual increase in receptor density in the top muscles but is attributable to different camera gains. No statistically significant differences were seen between any of the groups. NT, Nerve terminal. Gray value: 0 = white, 256 = black. Values are mean ± SD (number of observations).