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• Cancer cells do not respond normally to the body's control mechanism.
o They divide excessively and invade other tissues.o If left unchecked, they can kill the organism.
• Cancer cells do not exhibit contact inhibition
o If cultured, they continue to grow on top of each other when the total area of the petri dish has been covered o They may produce required external growth factor (or override factors) themselves or possess abnormal signal transduction sequences which falsely convey growth signals thereby bypassing normal growth checks.
• Cancer cells exhibit irregular growth sequences
o If growth of cancer cells does cease, it does so at random points of the cell cycle o Cancer cells can go on dividing indefinitely if they are given a continual supply of nutrients o Normal mammalian cells growing in culture only divide 20-50 times before they stop dividing.
HISTORY OF THE CELL Term "Cytology" was given by Hertwig , he also wrote a book on " Cell and Tissue ". Father of cytology = Robert Hooke. Father of Modern cytology
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flowers formation without any leaves?
How does a person with drown syndrome obtain a third chromosome 21?
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Speculate on the necessity of interdependence of volvox organisms in the colonial existence
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Thiazide diuretics have been accepted as the primary foundation of antihypertensive therapy. The basis of this choice is that, apart from their primary hypotensive effect, they enh
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