Table 1

Comparison of mass per unit length of chicken erythrocyte chromatin fibers predicted from EC-M images with neutron-scattering and scanning-transmission EM (STEM) measurements (56)

Ionic strength, (M+)Mean linker entry–exit angle from EC-M imagesMass per length from neutron-scattering and STEM data (56)Mass per length from models based on EC-M data
5 mM85°1.51.6
15 mM45°3.23.0
80 mM35°6.05.9