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Rak [ muški rod {astrologija} ]

Cancer [ imenica {astrologija} ]
Generiši izgovor

A small zodiacal constellation in the northern hemisphere; between Leo and Gemini.
The fourth sign of the zodiac; the sun is in this sign from June to July 2Also called: Cancer the Crab.
Faintest of the zodiacal constellations (its brightest stars are fourth magnitude). It lies in the Northern hemisphere, between Leo and Gemini, and is represented as a crab. Cancer's most distinctive feature is the star cluster Praesepe, popularly known as the Beehive. The Sun passes through the constellation during late July and early Aug. In astrology, the dates for Cancer are between about June and July (see precession).

rak [ muški rod {medicina} ]

cancer [ imenica {medicina} ]
Generiši izgovor

Any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream.
Group of diseases characterized by abnormal proliferation of cells. Cancer (malignant) cells are usually degenerate, capable only of reproducing themselves (tumor formation). Malignant cells tend to spread from their site of origin by traveling through the bloodstream or lymphatic system (see metastasis).
causes
There are more than 1types of cancer. Some, like lung or bowel cancer, are common; others are rare. The likely causes remain unexplained. Triggering agents (carcinogens) include chemicals such as those found in cigarette smoke, other forms of smoke, asbestos dust, exhaust fumes, and many industrial chemicals. Some viruses can also trigger the cancerous growth of cells (see oncogenes), as can X-rays and radioactivity. Dietary factors are important in some cancers; for example, lack of fiber in the diet may predispose people to bowel cancer and a diet high in animal fats and low in fresh vegetables and fruit increases the risk of breast cancer. Psychological stress may increase the risk of cancer, more so if the person concerned is not able to control the source of the stress.
cancer genes
In some families there is a genetic tendency toward a particular type of cancer. In 19researchers isolated the first gene that predisposes individuals to cancer. About 1 in 2people in the West carry the gene. If the gene mutates, those with the altered gene have a 7chance of developing colon cancer, and female carriers have a 5chance of developing cancer of the uterus.
This accounts for an estimated 1of all colon cancer.
In Sept 19a gene that triggers breast cancer was identified. BRCA1 is responsible for almost half the cases of inherited breast cancer, and most cases of ovarian cancer. Women with the gene have an 8chance of developing breast or ovarian cancer during their lifetime.
treatment
Cancer is one of the leading causes of death in the industrialized world, yet it is by no means incurable, particularly in the case of certain tumors, including Hodgkin's disease, acute leukemia, and testicular cancer. Cures are sometimes achieved with specialized treatments, such as surgery, chemotherapy with cytotoxic drugs, and irradiation, or a combination of all three. Monoclonal antibodies have been used therapeutically against some cancers, with limited success. There is also hope of combining a monoclonal antibody with a drug that will kill the cancer cell to produce a highly specific magic bullet drug. In 19it was discovered that the presence in some patients of a particular protein, p-glycoprotein, actively protects the cancer cells from drugs intended to destroy them. If this action can be blocked, the cancer should become far easier to treat. Public health programs are concerned with prevention and early detection.
A US trial commenced 19to treat cancer patients with gene therapy. Ten women with breast cancer were injected with a virus genetically engineered to destroy tumors. Up to 1 billion viruses were injected into the chest cavity over a four-day period. Researchers are hopeful of extending life expectancy, rather than providing a total cure.
UK trials began 19of a drug designed to check tumor growth and prevent cancer spreading. The drug, called BB-251performed well in animal trials.Its manufacturer hopes it will stabilize cancer in humans, enabling sufferers to lead relatively normal lives whilst maintaining dosage.

canker [ imenica {medicina} ]
Generiši izgovor

ETYM Old Eng. canker, cancre, AS. cancer (akin to Dutch kanker, OHG chanchar.), from Latin cancer a cancer; or if a native word. Related to also Old Fren. cancre, French chancere, from Latin cancer. Related to cancer, Chancre.
An ulceration (especially of the lips or living of the mouth).

rak [ muški rod {životinja} ]

Vodeni ljuskar, jastog ili rarog, škamp.

clam [ imenica {životinja} ]
Generiši izgovor

Burrowing marine mollusk living on sand or mud.
Flesh of either hard-shell or soft-shell clams.
Common name for a bivalve mollusk. The giant clam Tridacna gigas of the Indopacific can grow to 1 m/3 ft across in years and weigh, with the shell, 5kg/1,0lb.
A giant clam produces a billion eggs in a single spawning.
The term is usually applied to edible species, such as the North American hard clam Venus mercenaria, used in clam chowder, and whose shells were formerly used as money by Native Americans. A giant clam may produce a billion eggs in a single spawning.

crawfish [ imenica {životinja} ]
Generiši izgovor

See

crayfish [ imenica {životinja} ]
Generiši izgovor

Small freshwater decapod crustacean that resembles a lobster; SYN. crawfish, crawdad, crawdaddy.
Tiny lobster-like crustaceans usually boiled briefly; SYN. crawfish, crawdad, ecrevisse.
Freshwater decapod (ten-limbed) crustacean belonging to several families structurally similar to, but smaller than, the lobster. Crayfish are brownish-green scavengers and are found in all parts of the world except Africa. They are edible, and some species are farmed.
The spiny lobster Palinurus vulgaris, is sometimes called crayfish; it is actually a marine lobster without pincers, and grows up to cm/in long.

cancer [ imenica {životinja} ]
Generiši izgovor

ETYM Latin cancer, cancri, crab, ulcer, a sign of the zodiac; akin to Greek karkinos, Skr. karkata crab, and prob. Skr. karkara hard, the crab being named from its hard shell. Related to Canner, Chancre.
Type genus of crustaceans of the family Cancridae; Also called: genus Cancer.



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