Time-lapse of a CHO.K1 cell cotransfected with very low levels of GFP-MIIA (myosin IIA, green) and paxillin (magenta). Yellow arrowheads mark paxillin-containing adhesions that disassemble concomitant...

The C2C12 cell line, a mouse myoblast line, was used here to study the regulatory factors in myogenic differentiation. After cultured in differentiation medium for 3 days, these cells differentiated i...

The C2C12 cell line, a mouse myoblast line, was used here to study the regulatory factors in myogenic differentiation. After cultured in differentiation medium for 3 days, these cells differentiated i...

The C2C12 cell line, a mouse myoblast line, was used here to study the regulatory factors in myogenic differentiation. After cultured in differentiation medium for 3 days, these cells differentiated i...

The C2C12 cell line, a mouse myoblast line, was used here to study the regulatory factors in myogenic differentiation. After cultured in differentiation medium for 3 days, these cells differentiated i...

The C2C12 cell line, a mouse myoblast line, was used here to study the regulatory factors in myogenic differentiation. After cultured in differentiation medium for 3 days, these cells differentiated i...

This image of endothelial cells from cow lung shows two components of the cytoskeleton, microtubules (green) and actin filaments (red).

Contractile vacuole pore in face view illustrating the microtubular ribbons that extend from the pore to the CV membrane, the coil of microtubules that surrounds the pore and smaller pellicular pores ...

Detail of CV pore. Microtubules encircle the pore wall and other microtubules radiate out from the pore toward the CV membrane. TEM taken on 3/27/69 by R. Allen with Philips 300 operating at 60kV. Neg...

A rare micrograph of the contractile vacuole and intact contractile vacuole pore membrane of Euplotes. Close examination at high magnification reveals the organization of microtubules lining the pore ...