Femoral Hernia
.... resulting in pain and nausea. Other times it may hardly be
noticeable. Treatment usually involves manually manipulating the protruding
portion of the intestine back to the proper place or the surgical repair of the
muscle wall through which the hernia protrudes. Surgical repair of a hernia is
referred to as a herniorrhaphy. The only effective way of preventing a hernia
is to refrain from putting strain or pressure on the area of the abdomen or
groin.
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How Nutrients Get In, And Wastes Out.
.... of one or more amino acids. When they are
digested, they produce free amino acids and ammonia.
Vitamins are a vital part of our food that are absorbed through the small
intestine. There are two different types of vitamins, water-soluble (All the B
vitamins, and vitamin C) and fat-soluble (vitamins A, D and K).
Neutral fats, or triglycerides, are the principal form of dietary fat. They are
simple compounds, and within digestion are broken down into glycerol and fatty
acids, their component parts.
Ingestion
Intake of food in the Paramecium is controlled by the needs of the cell. When
food is sensed, the organism guides .....
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Reproductive Technologies: Does Choice Mean Freedom?
.... a vast area to discuss because it ranges from
artificial insemination to abortion to contraception to genetic engineering with
many area in between.
Artificial insemination is the introduction of sperm to an ovum
artificially either inside or outside the female genital tract. Abortion is the
"extermination of pregnancy before the fetus is capable of independent life."
Birth control is a huge area of reproductive or contraceptive technology, in
effect though all sub areas of this main area deal with the prevention of
fertilization of the ovum or egg, also in some cases such as the condom it can
stop the spread of disease. Geneti .....
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The Human Genome Project
.... soon after, were the main research agencies
within the US government responsible for developing and planning the project. By
1988, the two agencies were working together, an association that was formalized
by the signing of a Memorandum of Understanding to "coordinate research and
technical activities related to the human genome". The National Center for Human
Genome Research (NCHGR) was established in 1989 to head the human genome project
for the NIH. NCHGR is one of twenty-four institutes, centers, or divisions that
make up the NIH, the federal government's main agency for the support of
biomedical research. At least sixteen co .....
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AIDS And YOU
.... adults currently carry the virus. That figure
is increasing. And what occurred there will, if no cure is found, most
likely occur here among heterosexual folks.
AIDS was first seen as a disease of gay males in this country.
This was a result of the fact that gay males in this culture in the days
before AIDS had an average of 200 to 400 new sexual contacts per year.
This figure was much higher than common practice among heterosexual
(straight) men or women. In addition, it turned out that rectal sex was a
particularly effective way to transmit the disease, and rectal sex is a
common practice among gay males. For these reasons, t .....
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Huntington's Disease
.... the gene exists from anywhere between thirty-five to one-hundred or more.
The gene for the disease is dominant, giving children of victims of Huntington's
disease a 50% chance of obtaining the disease.
Several other symptoms of the disease exist other than chorea. High levels of
lactic acid have been detected in patients of Huntington's disease as a bi-
product of the brain cells working too hard. Also, up to six times above the
normal level of an important brain brain protein, bFGF (or basic fibroblast
growth factor) in areas of the brain effected by the chorea. This occurs from
the problems on chromosome 4, where the g .....
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AIDS - What's New ?
.... to conquer infections,
the Western world was ill prepared to cope with the advent of AIDS in 1981.
(Retro- spective studies now put the first reported U.S. case of AIDS as
far back as 1968.) The arrival of a new and lethal virus caught us off
guard. Research suggests that the agent responsible for AIDS probably
dates from the 1950s, with a chance infection of humans by a modified
Simian virus found in African green monkeys. Whatever its origins,
scientists surmise that the disease spread from Africa to the Caribbean
and Europe, then to the U.S. Current estimates are that 1.5 to 2 million
Americans are now probably HIV carriers .....
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AIDS: A U.S.- Made Monster?
.... and the defenceless patient remains exposed to a range of
infections that under other circumstances would have been harmless. Most
AIDS patients die from opportunistic infections rather than from the AIDS
virus itself. The initial infection is characterized by diarrhea,
erysipelas and intermittent fever. An apparent recovery follows after 2-3
weeks, and in many cases the patient remains without symptoms and
functions normally for years. Occasionally a swelling of the lymph glands,
which does not affect the patient's well-being, can be observed. After
several years, the pre-AIDS stage, known as ARC (Aids- Related Complex)
sets .....
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Impotency: New Therapy
.... .....
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Alzheimer's Disease
.... have "paired helixes" include Parkinson's disease, Down's
Syndrome, and Dementia Pugilistica. Scientists are not sure how the paired
helixes are related in these very different diseases.
Neuritic Plaques are patches of clumped material lying outside the
bodies of nerve cells in the brain. They are mainly found in the cerebral
cortex, but have also been seen in other areas of the brain. At the core of
each of these plaques is a substance called amyloid, an abnormal protein
not usually found in the brain. This amyloid core is surrounded by cast off
fragments of dead or dying nerve cells. The cell fragments include dying
mitocho .....
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U Of T Professors Devise Better Way To Test Sight In Babies
.... babies
who don't appear to see well will see better in the future; to determine a
course of treatment for such problems in which one eye turns in or is
weaker than the other eye. The second aspect of the researchers' work
involves the development of a stimulator for stereopsis, or binocular
vision, which is the fusing of images from both eyes into one picture that
has depth. "The problem with testing binocular vision, " explains Skarf,
"is that most stimuli presented to young children have other cues that
can be seen with one eye alone. We wanted to devise stimuli that can only
be seen by both eyes together and would produce spe .....
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Bronchitis
.... This is soon
followed by the obvious persistent cough. At first the cough is dry and
racking and eventually becomes phlegmy. The persistent cough is worse at
night than during the day, and when the person breathes in smoke and fumes.
The main symptoms most recognized in chronic bronchitis is, again, a cough,
with sputum, often occurring in paroxysms. Other symptoms in chronic
bronchitis are dependant on how much, or how little, emphysema is present.
This disorder causes the lungs to become overstretched, making the
breathing process difficult. The chronic bronchitic with no emphysema tends
to be overweight and often has a .....
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