Fluorescent micrograph showing the mitotic spindle, which is composed of microtubules. During cell division the chromosomes duplicate and are pulled to opposite poles by the spindle, once the chromoso...

Scanning electron micrograph of passion flower pollen. A related image is CIL:39344.

Scanning electron micrograph of lotus leaf trichomes. Trichomes are derived from specialized epidermal cells on a leaf surface and are important for water repellence.

Transmission electron microscope image of T4Phage on the surface of Escherichia coli bacteria. T4Phage is a bacteriophage that infects E. coli bacteria.

Single frog sacculus hair bundle imaged with field-emission scanning electron microscope.

Scanning electron micrograph of collagen fibrils, showing their characteristic 'D banding' morphology. These collagen fibrils are present in the joint capsule tissue that surrounds the knee.

Transmission electron microscope image of T4Phage, a bacteriophage that infects Escherichia coli bacteria. This image is part of an image group (CIL:41124-41131).

Time lapse movie of a developing sand dollar embryo expressing GFP-histone H2B. The movie shows several rounds of mitoses.

Sand dollar embryos expressing GFP-H2B going thru stages of mitosis. Video is animated with the cursor indicating the stages of mitosis and the morphological characteristics of the stage during the t...

Yolk syncytial layer nuclei undergo epiboly and converge dorsally during late gastrulation. Video made available by Mark Cooper through Zebrafish - The Living Laboratory.