The liver performs dozens of functions that are important to metabolism. Liver enzymes make many of these processes possible. There are literally thousands of enzymes in the human liver. But when some of these enzymes accumulate at elevated levels, problems can result.

Seasonal flu occurs every year but many people have some immunity against it which protects them from getting sick. The swine flu virus on the other hand is an entirely new agent against which most of us have little or no immunity. As a result, this virus can spread very fast and affect a much larger number of people than seasonal flu. As of now a vaccine against swine flu is not available. However, you can protect yourself from getting infected by taking some simple precautions.

So far tests show that swine flu is responding to oseltamivir and zanamivir. Antiviral medicines reduce the severity of swine flu and also speed up recovery from symptoms. They can also prevent complications of swine flu. These drugs are most effective when started within two days of onset of symptoms. Antiviral drugs are medicines that act against viruses. They are prescription medicines, which means that you should not buy them on your own or take them unless prescribed by a qualified health professional. Four antiviral drugs are approved for use in flu. They are oseltamivir, zanamivir, amantadine and rimantadine. The swine flu virus is not responding to two of the medicines, i.e amantadine and rimantadine. So far tests show that it is responding to oseltamivir and zanamivir. These medicines act specifically against the flu viruses and will not prevent or treat flu like symptoms caused by aby other virus.

It is also called as Swine influenza, hog flu or pig flu. It is caused by a virus of influenza group called swine influenza virus. This virus usually affects the pigs.

Morphology refers to the shape and structure of the sperm. A normal-looking sperm has an oval head and a tail seven to 15 times longer than the head. On a semen analysis, in which we look at sperm under the microscope, we can identify defective sperm by their large heads or strange tails -- kinked, doubled, or coiled.