Tumor is caused by abnormalities and excessive cell division. There are two types of tumors, namely benign tumor and malignant tumor. Although there is no possibility of cancer from benign tumors, but malignant tumor causes cancer. Now thinking about the brain, it is known that it is made with neurons and ganglion. Because the neuron's centrosome is inactive, it stays at the G-0 level of cell division, so they can not be divided. But in the first statement it has been said that tumor is caused due to extra cell division. This phenomenon may seem unusual. But brain tumors are actually occurring. In some rare cases, the centrosome part of these neurons of the brain became active and the cells could not be confined to the G-0 condition, so the neurons could be separated. But neurons can not control this division, so this division action reaches a greater level due to brain tumors.
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