A band
The dark-staining region of a sarcomere, in which myosin thick filaments are present; the center is traversed by the paler H zone, which in turn contains the M line.
GO:0110165
cellular anatomical structure
is_a
GO:0030017
sarcomere
part_of
A disc
exact
Q disc
exact
anisotropic disc
exact
transverse disc
exact