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Cancer is a class of diseases in which a group of cells display the
traits of uncontrolled growth, invasion, and sometimes metastasis.
These three malignant properties of cancers differentiate them from
benign tumors, which are self-limited, do not invade or
metastasize. Most cancers form a tumor but not all cancer e.g.
leukemia.Cancer may affect people at all ages, even fetuses, but
risk for the more common varieties tends to increase with age.
Nearly all cancers are caused by abnormalities in the genetic
material of the transformed cells. These abnormalities may be due
to the effects of carcinogens, such as tobacco smoke, radiation,
chemicals, or infectious agents. Other cancer-promoting genetic
abnormalities may be randomly acquired through errors in DNA
replication or are inherited and thus present in all cells from
birth. Complex interactions between carcinogens and the host genome
can explain mechanism of cancers develop after exposure to a known
carcinogen.This book addresses the biomolecular mechanisms of new
aspects of genetics in the initiation of Cancer and progression of
Tumor.
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Chitosan (Paperback)
Kalyan Ghatak, Sheikh MD Enayetul Babar
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R1,310
Discovery Miles 13 100
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Ships in 10 - 15 working days
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Chitin and its deacetylated derivative chitosan are natural
polymers composed of randomly distributed beta-(1-4)-linked
D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine
(acetylated unit). Chitin is insoluble in aqueous media while
chitosan is soluble in acidic conditions due to the free protonable
amino groups present in the D-glucosamine units. They both are
highly valuable, and used in different fields of food, biomedicine
and agriculture and so on. The success of chitin and chitosan in
each of these specific applications is directly related to deep
research into their physicochemical properties. Thereby this book
is aimed to highlight the relationship between the physicochemical
properties of the polymers and their behaviour. A functional
characterization of chitin and chitosan regarding some biological
properties and some specific applications are focused here in this
book also.
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