Table 1.

FP expression among the S100-FP lines

	FP expression
S100-FP line	Schwann cells	Motor axons	Muscle macrophages	CNS
Kosmos	All, in all muscles examined	None	Very few	Astrocytes; Bergmann glia
YA	Subsets, + in so, ts, di; +++ in st, EDL; weak expression in so	Subsets, + in so, di; ++ in st, EDL; +++ in ts	Few-many so, EDL <st <ts, di	Microglia with few or weak astrocytes; Subset of Bergmann glia
YB	Weak expression in subsets. + in so, di; ++ in st, EDL, tri	Subsets, none in di, so; +++ in st, EDL, ts	Few	Dim labeling
YD	Subsets, ++ in st, di, ts, so; +++ in EDL; weak expression in so and di	Subsets, + in so, di; ++ in st, EDL, ts	Few-many so <st, EDL <ts, di	Bright microglia, dim astrocytes; Bergmann glia
YE	Subsets, ++ in ts, di, st; +++ in so, EDL; weak expression in so and di	Subsets, ++ in st, EDL, di; +++ in ts	Some-many st, so, EDL <ts, di	Not examined
YF	All, in all muscles examined	Subsets, None in ts, so, di, EDL; ++ in st	Few-many st, so, EDL <ts <di	Bright microglia, dim astrocytes; Bergmann glia
YG	All, in all muscles examined	Subsets, None in di, so; + in st, ts, EDL	Few	Bright microglia, dim astrocytes; Bergmann glia
YH	Weak expression in subsets. none in so, di; + in st, EDL, ts	Subsets, ++ in di, so; +++ in st, EDL, ts	Some-many st, so, EDL <ts, di	Bright microglia, dim astrocytes; Bergmann glia

Sizes of subsets are indicated as +++ for most, ++ for some, and + for few of cells present. For each line, two to eight muscles and one to four brains were examined. st, Sternomastoid; so, soleus; EDL, extensor digiforum longus; ts, triangularis sterni; di, diaphragm.