Articles [Medicine & Surgery]

In a nerve cell, communication take place by the process of excitation and conduction of electrical impulses.These impulses are the language of neurons.The stimulus which cause excitation can be electrical, chemical or mechanical.Once the nerve is...

In an organism there are different types of nerve fibers.The difference can be in function, diameter, conduction velocity etc..It was Erlanger and Gasser who studied mammalian nerve fibers and classified it into various types.They observed and...

Vaccines in which purified immunogens capable of eliciting protective response are identified and selectively used in isolation are referred to as subunit vaccines. Biotechnology has provided this new class of vaccines called subunit vaccines. The...

In a human body there are different types of nerve cells and the number of nerve cells in Central nervous System only is estimated to be about 100 billion.Though the nerve cells are different in shape and size, most of them has the same parts as a...

Corneal Refractive Therapy (CRT) Lens are special type of lens which correct the problem with vision and helps to have normal vision without actually wearing the lens.Unlike contact lens and glasses, you have to put it on when you go to sleep and...

  There is no limit to the inventive powers of the human minds and this limitless power has enabled us to scale one height after another. The history of scientific achievements records the triumph of science in minute details. What all started as...

Every tissue and organ of human body is composed of different types of cells. The nerve cells are different from the cardiomyocytes or cells of the heart. It is impossible to transfer a differentiated cell from a tissue or an organ to another....

Sexual reproduction is a complex process involving two individuals or parents of different sexes i.e. male and female. The formation of two different types of gametes by male and female takes place in their gonads i.e., testis in male and ovary in...

Chemical messengers are involved in communication and maintaining consistency and equilibrium of the internal environment of the body of the animal and in the body’s response to various stimuli. One type of chemical messenger is known as hormone....

Acquired Immunodeficiency Syndrome or AIDS has become the biggest challenge for medical science.It is caused by a virus called Human Immunodeficiency Virus or HIV.Now AIDS is a disease of pandemic proportions and a cure or vaccine may be decades...