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Point out some Difference between Tumor And Cancer?
Tumor is a swelling or growth because of an abnormal growth of tissue. Tumors can either be benign or malignant. The benign tumor remains highly localized. On the other hand, the malignant tumor known as cancer is characterized by invasiveness and can form distant colonies elsewhere in the body. Cancer cells are very irregular in shape and their arrangement in tumor tissue is very unruly. Cancer is painless if it does not compress the adjacent organs. Later, it causes pain by invading or pressing the adjacent vital organs.
Another aspect of malignancy is the ability of tumor cells to elude the immune system. These cells may cover up antigens that would otherwise mark them for destruction or they may rid themselves of the cell surface molecules that lymphocytes use to recognize foreign cells. The immune system is largely ineffective.
The next step in the nitrogen cycle is the assimilation of inorganic nitrogen in the type of ammonia into organic nitrogen-having compounds. Total organisms assimilate ammonia by
you tested three different treatments for ripening bananas. Before you did the lab, which one did you think would have ripened most? State your hypothesis and explain your reason
Q. What is the kind of circulatory system present in annelids? In beings of the phylum Annelida the circulatory system is closed that is blood circulation takes place only with
SIMILARITIE S BETWEEN APES AND MAN - Absence of tail. Broadened chest due to flattening of sternum Smaller lumber region due to reduced number of lumbar vertebrae
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How is the brain involved in the immune system? A. Immune cells that constitute body's biological defense against infections and toxins, have many things in common with nerve c
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An osteoclast is a type of bone cell that absorbs bone tissue by removing its mineralized matrix and breaking up the organic bone. This process is known as bone resorption
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