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Fig. 11. The nuclear content of isolated muscle fibres. (A) A fast muscle fibre
stained with the fluorescent DNA stain Sytox green. The confocal image
represents a projection of 1 µm sections through the fibre. (B) The number
of myonuclei in single muscle fibres of 1 cm length in relation to muscle
fibre diameter. Open circles represent the ambient group and filled circles
represent the heated group. The lines represent linear regressions (see text
for details).