This sequence taken with the polarizing microscope in 1967 shows the reversible enhancement of spindle volume and birefringence by heavy water in arrested metaphase oocyte of Pectinaria gouldi (ice cr...

Dividing eggs of the medusa Clypeaster japonicus showing birefringent spindles and fertilization envelopes. The arrow indicates the direction of the compensator slow axis. As the direction of compensa...

Mouse myoblasts stably transfected with GFP-PCNA to label replication foci and the 3D distribution of the GFP signal recorded over time using a confocal microscope. The time series illustrates the dyn...

Confocal"Brainbow" mouse hippocampus and cerebral cortex neurons, with several fields montaged together. In Brainbow mice, neurons randomly choose combinations of red, yellow and cyan fluorescent pro...

Fluorescence images of control and nocodazole treated mitotic HeLa cells showing the effect of over expression of GFP-nuclear mitotic apparatus protein (NuMA) (blue) in relation to human structural ma...

Mouse 3T3 fibroblast immunostained for the nucleolar protein nucleostemin (left, green) and fibrillarin (right, red) marking nucleolar fibrillar centers.

Rat NRK fibroblasts in phase contrast and stained for the nucleolar proteins nucleostemin (green) and fibrillarin (red). Panels at right show merge. Rows show different stages of mitosis, from top, ea...

Phase contrast microscopy of living bone marrow derived macrophages. These cells are highly motile and the snapshot catches lamella and ruffles where the cells are protruding and phase dense organell...

Phase contrast microscopy of living bone marrow derived macrophages. These cells are highly motile and the snapshot catches lamella and ruffles where the cells are protruding and phase dense organell...

Phase contrast microscopy of living bone marrow derived macrophages. These cells are highly motile and the snapshot catches lamella and ruffles where the cells are protruding and phase dense organell...