Figure 4.

Meridional (A and B) and equatorial (C) intensity profiles from x-ray diffraction patterns from cold (thin lines) and hot (thick lines) relaxed muscle. (A) Off-meridional integration from 0.02 nm⁻¹ to 0.087 nm⁻¹ in the equatorial direction. The positions of myosin layer lines, M1–M6, and of two actin layer lines, A6 and A7, are marked. (B) Same as A, but with subtracted background. (C) Integration in the meridional direction in the range of ±0.0014 nm⁻¹. Positions of the 10 and 11 equatorial reflections are marked. The same diffraction patterns as those shown in Fig. 3 with no background subtraction.