The term viruses which send shock waves in the minds of the people
in medical profession in particular and public in general is a house hold name
today. They cause mild diseases like influenza to the most dreadful of the
diseases - the cancer. They have been a highly controversial group of tiny
microscopic objects which have been rightly termed the most perfect obligate
parasites of the world. They are absolutely inert outside a living host
but once inside the host they are capable of growing, multiplying and
undergoing even mutation. They are, therefore, supposed to represent a
transitional form of life lying on the border line between the non living and
the living world. Read more>>
