Cytoplasmic streaming in the giant cells that make up the stem of the stonewort Chara virgata. In the video on the LHS the focus is on the shorter cortical cells that surround the giant internodal cell that is in the middle of the stem. In the video on the RHS the focus is now the internodal cell that lies beneath the cortical cells

Cytoplasmic streaming in the giant internodal cells: the video on the RHS shows that there is a hiatus of activity in the junction between the two opposing streams of movement of particles