Huddled in a single layer along a narrow glass slide, the cells—in this case myoblasts, progenitors of muscle cells—were the latest of hundreds that Wan had plated using a technique called ...

When muscle cells are viewed under the microscope ... Within the sarcomere, myosin slides along actin to contract the muscle fiber in a process that requires ATP. Scientists have also identified ...

Muscle cells contain filaments of protein that slide over each other to cause muscle contraction. The arrangement of these filaments causes the banded appearance of heart muscle and skeletal muscle.