Gallbladder wall of a human patient with gallstones. This low magnification view shows the wall of the diseased gallbladder to have a top layer of highly polarized epithelial cells over a large volu...

Fluorescence image of tripolar mitosis in a liver cancer cell line. Normally, dividing cells form a single metaphase plate of paired chromosomes which are pulled apart by opposing microtubule spindle...

Scanning electron micrograph of a 6 day old human embryo beginning to implant into the lining of the uterus (endometrium). As implantation progresses, the inner cell mass begins to form into the bila...

Tripolar mitosis in a liver cancer cell line. Normally, dividing cells form a single metaphase plate of paired chromosomes which are pulled apart by opposing microtubule spindles. The Z series, obtai...

Tripolar mitosis in liver cancer cell line. Normally, dividing cells form a single metaphase plate of paired chromosomes which are pulled apart by opposing microtubule spindles. This sequence shows p...

Surface representation of tripolar mitosis in a liver cancer cell line. Normally, dividing cells form a single metaphase plate of paired chromosomes which are pulled apart by opposing microtubule spi...