The variations of cell architecture. Differentiation, dedifferentiation, and cancer

0 The variations of cell architecture. Differentiation, dedifferentiation, and cancer 

Plants differ from animals in many ways absence of a nervous system, of muscles (and hence of locomotion), and of an efficient circulatory system  

The organization of plant and animal cells into a variety of tissues makes a valuable division of labour possible in WM/ricellular creatures. But, apart from this, a further division of labour occurs at the cellular level by differentiation into nerve cell, muscle cell, epithelial cell, and so on. 

Cancer, Much of the most effective treatment of cancer with drugs depends on comparative cytology. Cancer cells are normally highly-specialized cells which have lost some or all of their differentiation. In short, they have regressed to a much simpler, more primitive type of cell which (unlike the normal parent) divides continuously though inefficiently. Because a much higher proportion of cancer cells are actively 

Another form of cancer treatment makes use of hormones (especially androgens and oestrogens) to induce the cancer cells to re-acquire some differentiation, and hence behave more like the healthy cells of the tissue in which the malignancy occurs. 

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