A. MN survival at day 6 of MN co-culture assay with wild
type, SOD1(G93A), SOD1(G93A) + HSPB1(TriA) or SOD1(G93A) + HSPB1(TriD)
astrocytes. MN survival was normalized to counts from MNs cultured with wild
type astrocytes. (n = 3 for all groups, each n was run in triplicate.) Error
bars denote s.e.m. **P<0.001,
****P<0.0001, n.s., non-significant. B.
Representative immunoblot confirming the expression of HSPB1(TriA) and
HSPB1(TriD) in SOD1(G93A) astrocytes using an antibody specific to human
HSPB1.