A tumor is an extensive overgrowth of tissues that consist of the cells lost their normal form and functions. These cells are called malignant cells, or cancer cells. Their presence means the development of oncological disease. Deep and detailed researches in oncology began at the end of the 19th century. In 1903, the scientists proposed a theory about virus nature of cancer.
Today malignant cells, their characteristics, creation and development are an object of study of genetics, molecular biology, virology, immunology, ecology and other fields of science. The main aim of these researches is to find effective preventive measures and guaranteed cancer treatment method. Very often we know about one or another discovery that promise us the panacea from malignant tumors.
For example, recently the scientists from University of California, Santa Barbara have discovered that a combination of quercetin bioflavonoid and low-frequency ultrasound is an effective method of malignant cells treatment. The trials were made among the patients with cancer of skin and prostate. The combination of quercetin and ultrasound at 20 kHz and 2 watts per one square centimeter during 60 seconds kills 90 per cent of malignant cells. The result is registered in 48 hours after this processing.
At the same time this therapy does not influence the normal cells. It means that ultrasound effects malignant cells selectively and makes quercetin very toxic only for them. The trials are described in British Journal of Cancer.
English scientists made the next discovery. They discovered that horseradish is able to destroy malignant cells. This property of horseradish was found out accidentally when the scientists were studying exotic extracts of African citizens.
This plant is used in Europe and Russia as flavoring for meat. The Zulu, citizen of South Africa uses it as poisonous substance and rub arrowhead with it. The experiments have discriminated a molecule that is able to divide malignant cells in several pieces.
This anticancer potency of horseradish molecule shows the new way of cancer treatment. The new vaccine on the base of horseradish is synthesized in Great Britain and it is used today.
The best way of treatment is prevention and diagnosis at early state of disease. But sometimes it is very difficult to define malignant cells. Recently the National laboratory Sandia has developed a new method of malignant cells identification with the help of laser. It is based on the malignant cells properties. Mitochondrion i.e. the cells that provide the energy for other cells are confusedly located in malignant cells, but in normal cells they are combined in ordered chains.
This malignant cells property influence scattering of sharp pulse of laser radiation. In a new method each separate cell is analyzed for some time. And laser is used in combination with special conveyer that presents each cell separately. It is expected that this laser technique will allow cancer diagnosis at early stages when other methods are not able to do it.