Traditionally, mitosis is considered to start when the condensing chromosomes first become visible within the prophase nucleus. The subsequent breakdown of the nuclear envelope terminates prophase ...

During prometaphase, the nuclear envelope that encloses the nucleus breaks down, and the nucleus is no longer separated from the cytoplasm. Protein formations called kinetochores form around the ...

The nuclear envelope is a regulated membrane barrier that separates the nucleus from the cytosol in eukaryotes. Although the NE is often depicted as a static barrier, new research has identified ...

Just as cities must carefully manage the flow of cars in and out of downtown, cells regulate the movement of molecules into and out of the nucleus. This microscopic metropolis relies on an intricate ...

Eukaryotic cells store their DNA in the nucleus, cordoned off from the cytoplasm by the nuclear envelope. Made up of two lipid bilayers called the inner and outer nuclear membrane, the nuclear ...

The researchers found that many of the nerve cells had breaks in the membrane that separates the nucleus from the rest of the cell. This barrier, known as the nuclear envelope, protects and ...