CBs and Cell Cycle
They are about 0.1-2.0 micrometres and are found one to five per nucleus. The number varies in different types of cells and over the cell cycle. Maximum number is reached in mid G1 phase and towards G2 they become larger and their number decreases. CBs disassemble during the M phase and reappear again later in G1 phase. Cajal bodies are possibly sites of assembly or modification of the transcription machinery of the nucleus.
Read more about this topic: Cajal Body
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